Evolution

Intelligent designer

The chief defender of intelligent design in the Dover evolution trial insists he has science and God on his side.

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Intelligent designer

Richard Thompson has a startling habit of thrusting his fist to his mouth and biting his index finger between the first and second knuckles, as if trying to keep himself from saying too much. But as quickly as it goes in, the finger comes out again and his words begin to flow. He cannot help himself. He must tell the truth. As he sees it.

Thompson is the founder, president and chief council of the Thomas More Law Center, a nonprofit group in Ann Arbor, Mich. The Law Center is representing the Dover School Board pro bono in the current landmark case that pits the theory of evolution against “intelligent design,” the theory that some features of the natural world are best explained as the products of an intelligent cause or designer. The Law Center describes itself as “the Sword and Shield for People of Faith,” and was originally funded by ultraconservative Domino’s Pizza millionaire Thomas Monaghan, who is, like Thompson, a Catholic.

On Sept. 26, the first day of trial, Thompson, in an elegant dark suit, is standing on the steps of the U.S. Middle District Courthouse in Harrisburg, Pa. The trial has adjourned for the day. It is expected to continue through the first week of November.

A light rain falls as lawyers and advocates on both sides of the debate are making public comments. But nearly all of the reporters, photographers and cameramen surround Thompson. He is short and powerfully built, white-haired but bald on top, and endowed with an impressive nose and preternaturally white teeth. He has the defiant, almost menacing energy of an armed man on a moral mission.

Thompson is holding forth on his defense strategy. He says his scientific experts will show that I.D. is a valid scientific theory based on empirical observation by credentialed and respected scientists. He is arguing that no theory should be judged by its historical roots, even if they are religious, or even if they are creationist. Modern chemistry emerged from alchemy, after all, and that doesn’t make it bogus. Astronomy emerged from astrology, and we don’t hold that against it. Nor should a theory be judged by the personal ideologies of those who hold it; plenty of Darwinists are atheists, but that doesn’t disqualify evolutionary biology as an ideology, he says.

Schools that want to include the I.D. debate in their curriculum deserve the right to do so, Thompson says. Denying them that right is a form of both scientific and religious discrimination. “I.D. is seeking a place in the classroom because of its merits,” he says. “But it’s being kept out because it is harmonious with the Christian faith.”

He continues: “There are two Americas today, one that’s still very religiously based, and another that has no foundation, where everything is relative, where everything goes.” And the moral relativism that dominates the second America is an ideology enabled by Darwinism.

“All scientific theories, including Darwinism, have religious implications,” Thompson says. And the religious implication of Darwinism is atheism. Furthermore, moral relativism, atheism and the idolatry of science are symptoms of our “floundering society.” Thompson says he aims to put society back on track, and that track is there for us, laid down by God. “We do this, all of the attorneys I’m working with do this, because of our religious commitment.”

“Do you believe that we and other primates descended from common ancestors?” a British filmmaker calls out. Thompson bites his finger and says, “Do I think I evolved from an ape? No, I don’t believe my ancestor was a monkey.”

Thompson stole the lines from William Jennings Bryan.

Bryan was the lawyer, orator, statesman and progressive evangelical Christian who, 80 years ago, argued against teaching evolution in high school in the Scopes Monkey Trial in Dayton, Tenn. Although Bryan won the Scopes trial, he is remembered for taking an intellectual pummeling on the stand by Clarence Darrow — perhaps the second most famous lawyer of the day and an advocate for evolution and modernity. While the Scopes trial set off decades of anti-evolution legislation in states around the country, it is also remembered as the beginning of the end for American creationism.

Who could have guessed that the ideologies fueling the Scopes trial would evolve enough to bring us this new version four-fifths of a century (and libraries full of evolution-supporting evidence) later? Well, Thompson could have. “Questions about the role of design in creation have been asked for thousands of years,” he says. “They haven’t been put to rest at all. They’re just getting stronger.”

Kitzmiller et al. v. Dover Area School District — the trial’s official name — was hatched in October 2004 when a small south central Pennsylvania community’s school board passed a resolution mandating that ninth-grade biology teachers launch their class by reading four paragraphs to their students. The paragraphs cast doubt on the validity of evolutionary theory and say that there are competing theories (specifically I.D.) and that copies of an I.D.-friendly textbook, “Of Pandas and People,” are available in the library for anyone who wants to learn more. Several members of the school board quit in protest when the proposal passed, and in December, 11 parents sued the board, accusing it of violating the First Amendment.

The suing parents — backed by the ACLU, Americans United for the Separation of Church and State, and the huge Philadelphia law firm Pepper Hamilton LLP — are claiming that I.D. is not a scientific theory, but a religious one, namely creationism, and has no business posing as science in biology classrooms.

U.S. District Judge John E. Jones III (a George W. Bush appointee) will have to decide, following testimony by scientists, philosophers, theologians and historians of science (as well as the plaintiffs and school board members), whether telling Dover’s ninth-graders about I.D. is exposing them to an “underdog science,” as Thompson calls it, or is promoting a particular religion.

If Judge Jones decides in favor of the Dover school board, dozens of other school boards around the country are waiting in the wings to implement I.D. into their science curricula. If he decides for the defendants, Darwin’s theory of evolution alone will continue to be taught in public schools as the scientific explanation for the diversity of life. Regardless of how Judge Jones votes, both sides have said they will appeal the case all the way to the Supreme Court.

Thompson gained fame as the Michigan state prosecutor who repeatedly charged assisted-suicide advocate Jack Kevorkian with first-degree murder, and didn’t stop pursuing him until Thompson was elected out of office, in large part for hounding Kevorkian. Thompson is also known for pushing through mandatory life sentences in Michigan for drug crimes and for prosecuting more drug offenders than anyone else. And, of course, Thompson shares with Bryan the conviction that Darwinism is perhaps the world’s most dangerous idea.

But for Thompson to prevail in his quixotic battle to convince the court that I.D. has a place in a nearby high school’s ninth-grade biology class, he will need more than confidence and religious zeal. Although divine intervention might help, what he really needs are some new and compelling arguments to help I.D. sneak around the constitutional prohibition against promoting a particular religious view in the public schools. And he thinks he’s got them.

It’s a week into the trial and Thompson is cross-examining John Haught, an expert witness for the plaintiffs. Haught, a recently retired professor of theology at Georgetown University, is the author of 13 books, including “God After Darwin” and “Science and Religion in Search of Cosmic Purpose.” Haught has argued that I.D. is nothing more than a “reformulation of the old argument for the existence of God that says, ‘Where there is a design there must be a designer.’”

The famous theologian William Paley popularized this argument in the early 1800s. Upon finding a watch, he said, it would be reasonable to deduce the existence of a watchmaker. Well, explains Haught, the I.D. theorists make the same deduction from what they call the “irreducible complexity” of certain sub-cellular structures, such as the bacterial flagellum, a little motorlike propeller that moves bacteria around.

By “irreducibly complex,” the I.D.ers mean that if you remove any part of the motor, the others will no longer serve any identifiable function at all, and so the flagellum could not have been selected for by natural selection. Irreducible complexity is the core of I.D.’s criticism of evolutionary biology, and in one version or another it has always been the central creationist argument.

The biology of I.D. had been hammered by the plaintiffs’ expert scientific witness days before. Brown University biologist Kenneth Miller argued that I.D. can never be science because it resorts to supernatural explanations for natural phenomena. Miller, who described himself as a devout Catholic and a believer in God, did not claim that there are no supernatural forces in the world, only that they are not the business of science.

“Science deals with natural causes for natural phenomenon,” Miller testified. “Intelligent design is a science stopper” because “it lets scientists off the hook” precisely when things get tricky, which is also when they get interesting — that is, when a naturalistic cause isn’t obvious. But, Miller insisted, “just because you don’t see at first how something could be the product of natural selection doesn’t mean it couldn’t be. Such challenges should spur a scientist to look deeper, not tell him it’s time to retire and just attribute something to the work of an intelligent designer.”

Haught’s main job on the stand is to talk about the history and theology of I.D., which he says is a direct descendent of creation science (also called special creationism), which in turn is a descendent of the kind of primitive, young-earth creationism debated in the Scopes trial.

Young-earth creationism, Haught explains, takes Genesis literally, posits that the world is between 6,000 and 10,000 years old, and claims that animal fossils are left behind by the Great Flood. Special creationism accepts a more realistic geological age for the earth and acknowledges the influence of micro-evolution (subtle change within a species). However, special creationism still holds that God created all species separately and pretty much as they are now.

Both theories have been rejected as science by U.S. courts. In 1982, a federal court declared unconstitutional an Arkansas law requiring that evolution and young-earth creationism be taught side by side. The court said creationism was religion and couldn’t be taught as science. In 1987, in a Louisiana case, the Supreme Court declared creation science to be religion, and deemed unconstitutional a Louisiana law mandating teaching it in the public schools wherever evolution was taught. Almost immediately I.D. was born, adopting more sophisticated versions of the old creationist arguments and replacing all references to God with an unspecified intelligent designer.

As Thompson begins his cross-examination, he instinctively looks, and grins, at the jury box, where the press is sitting.

“Just because you can trace an idea back to antiquity does not in and of itself make that idea invalid, does it?” Thompson asks Haught.

“No,” Haught says.

“Because a theory belongs to an individual of a certain faith doesn’t make that theory invalid does it?” continues Thompson.

No, says Haught, pointing out that many evolutionists hold various faiths or no faith at all.

“It would be a fallacy to say that a scientific theory was invalid just because it comes from one particular tradition or another, wouldn’t it?”

“Yes.”

Thompson reads from Haught’s book “Deeper Than Darwin,” in which the theologian writes that proponents of I.D. are often highly trained and skilled scientists, that they are no more or less intelligent than their counterparts in evolutionary biology, and that they are neither stupid nor insane.

All true, acknowledges Haught.

Thompson goes to another of Haught’s books and reads a section in which the theologian criticizes Robert Pennock, a Michigan State philosopher who had testified against I.D. two days earlier. In the passage, Haught takes Pennock to task for “misleading the public by conflating ID and creationism.”

“And yet you have said today that they are the same. Are they the same or not?” asks Thompson.

“They are not exactly the same,” says Haught, his lips trembling, clearly perturbed.

Thompson reads the final sentence from an early edition of Darwin’s “On the Origin of Species”: “There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one … from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.”

So, Thompson asks, should Darwin’s “On the Origin of Species” be kept outside the science classroom because it talks about the Creator with a capital “C” breathing life into early forms?

“No,” concedes Haught.

Thompson then gets Haught to agree that several luminary evolutionary biologists draw metaphysical conclusions from their studies of evolution. “Yes, [Richard] Dawkins, [Edward O.] Wilson, and [Stephen Jay] Gould carelessly conflate their science with materialist ideology,” says Haught. (Materialism is the belief that reality is composed only of matter and nothing supernatural exists, except in imaginations.)

“Should their work be banned from science classrooms?”

“No.”

The shape of Thompson’s case is beginning to emerge and Judge Jones, suddenly sitting up attentively and tipping his head toward the lawyer, seems to be taking notice. The court, and more broadly the scientific establishment, Thompson argues, must evaluate the scientific claims of I.D. on their merits, not condemning them by association with their religious roots or boosters. And those I.D. claims, he is implying, are already engaged by evolutionary scientists in debate. And that engagement itself is proof of a scientific controversy worthy of teaching in schools.

Perhaps feeling overconfident, Thompson takes aim at the Goliath of modern evolutionary genetics. He wants to show that the correlations between different species’ genomes — humans and chimpanzees, for example, which share 98 percent of their genes — say nothing about the evolutionary relationships between organisms.

“Let’s say I have some bolts, and from them I make both a plane and a car. Yes, they have the same parts, but that doesn’t mean the car came from the plane does it?”

“Uh, no,” says Haught, pausing to consider what Thompson could be driving at.

Thompson pauses too, turns again to the jury box and smiles triumphantly. He concludes that it is therefore easy to see that it is only mere conjecture that humans and other primates share genes just because they share an evolutionary lineage.

The jury box of reporters and many courtroom spectators seem dumbfounded. How could Thompson so confidently reveal such a basic misunderstanding of the role of genomics in analyzing and confirming evolutionary relationships? There are moments in the trial when even a science-abiding secularist can be seduced by parts of Thompson’s ethical and philosophical arguments that I.D. deserves a fair hearing in the public schools. But time and again, Thompson’s insistence that I.D. is science and not religion, and therefore by law can be taught in science classes, does not appear to be making any converts in the courtroom.

Later, anthropologist Eugenie Scott, director of the National Center for Science Education, who was in the courtroom, says it was all she could do to keep from cracking up. “Thompson was not even wrong,” Scott says. “He missed the boat completely. We didn’t need genomics to demonstrate evolution. But having genomic sequences of different species nails down the big idea that the more recently that two forms shared a common ancestor, the more alike they are in anatomy, biochemistry, embryology, behavior and genetics. And it does so beautifully and quantitatively.”

When court adjourns for the day, Thompson drags his rolling suitcase filled with briefs to the aging Harrisburg Hilton, a few blocks from the courthouse. We settle down in the lobby for an interview.

“Did you see me show that there’s no scientific evidence for man coming from an ape?” he asks enthusiastically. “I shouldn’t have. But I couldn’t help myself. I just wanted to do that.”

I figure it’s best to change the subject. I tell him that in profile he looks quite a bit like Bryan. It’s a bit of a stretch, but not entirely untrue.

He laughs disarmingly, delighted. “Frederick March, the actor in the movie ‘Inherit the Wind,’ or the real William Jennings Bryan?”

The real Bryan, I say.

He hits me gently on the shoulder and laughs again, clearly pleased.

I ask Thompson why this battle matters so much to him. He pauses, putting his hands together as if in prayer. “If you are nothing but an accident of nature, then nothing you do is dependent on objective truth,” he says. “You can set your own rules. There is no life after death. There are no set moral codes. If you go to bed, and if you die its OK, you’re just another piece of matter bouncing around and you’ll change into something else. That’s why, even if 100 million scientists say we are unplanned, that we’re just purposeless beings in this universe, the general population won’t buy it. And neither will I.”

He then reiterates his notion that I.D. is an underdog science that shouldn’t be relegated to theology just because current science hasn’t caught up with it. He compares I.D. to the Big Bang Theory, which was once unpopular and thought to have been religiously motivated.

“Einstein thought the Big Bang was wrong because it didn’t fit his metaphysics,” says Thompson. “But he was the one who was wrong. Should it have been illegal to discuss the Big Bang in schools just because it was consistent with Christianity?”

As he did in court, Thompson tells me that I.D. theorists are real scientists. “They are distinguished scientists doing credible experimental work, and they have found evidence of intelligent design in the empirical data that they see,” he says. “If the evidence suggests design, well … should they ignore it?”

Early this week, Michael Behe, a biochemist from Lehigh University in Pennsylvania, and the person who put “irreducible complexity” on the map with his 1996 book “Darwin’s Black Box,” appeared on the stand for two days. He explained that natural selection could not explain the existence of DNA or the immune system. He insisted that ID is not based on any religious beliefs but “is based on observed, empirical, physical evidence from nature, and it is definitely science.” When asked if the designer was God, he said yes, but added, “I concluded that based on theological, philosophical and historical facts.”

As we talk, Thompson bristles at the notion that I.D. is and always will be excluded from science. “What is science, and what is not science, is merely a convention,” he says. “It can be challenged and changed at will by scientists themselves. And scientists are the products of their culture, too.”

Doesn’t he find it a little odd that a champion of unchanging and absolute moral values should take such a relativist stance on science? He shrugs off the question.

“Look, scientists don’t sit there and ask, ‘Am I doing science or not?’ No scientist is going to say, ‘This is empirical truth about the wrong subject so I’m not going to study it.’ No, they look at whatever the empirical data is, and draw conclusions from it.”

“So you want to change the definition of science to include the supernatural?”

“Yes,” he says, “we need a total paradigm shift in science.”

Gordy Slack is the author of "The Battle Over the Meaning of Everything: Evolution, Intelligent Design, and a School Board in Dover, PA." He is currently writing a book about epilepsy.

“Darwin’s Devices”: Here come the robot fish

A scientist uses aquatic automatons to plumb the mysteries of evolution, intelligence and the future

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A detail from the cover of "Darwin's Devices"

Fish, without a doubt, gotta swim, but how do they do it? And how, over millenniums of evolution, did they get to be so good at it? These two questions have driven the career of John Long, a professor of biology and cognitive science at Vassar College. Long is so into fish that his primal scene of intellectual seduction involved a Ph.D. trying to get him to join her team by taking him out for coffee and asking, “Have you seen the vertebral column of a marlin?” Thus was Long launched into a course of study that would ultimately lead him to the improbable task of making robot fish.

As geeky as this may sound, it turns out that the problems inherent in making robot fish yield some of humanity’s deepest questions: How did we get here? What (and where) is thought? How much can we trust the symbols (words, images, digital signals) that dominate our lives? Long’s new book, “Darwin’s Devices: What Evolving Robots Can Teach Us About the History of Life and the Future of Technology,” is part Descartes, part MacGyver and part Douglas Adams, turning from rumination on the possibility of intelligence residing in a brainless body to tips on making artificial fish vertebrae out of coffee stirrers to the dopey yet endearing jokes that seem to flourish in laboratories all over the world.

Long works in a field called biorobotics, which builds physical devices to test hypotheses about animal behavior, rather than studying either the animal itself or digital models. Sometimes an animal can’t be studied for logistical reasons: marlins, for example, die in captivity and plesiosaurs are extinct. Computer models allow scientists to simulate complex, unreproducible conditions — say, the modeling of 10,000 generations of a particular organism — but as abstractions, they are prone to certain errors.

Robots, as Long explains, have their peculiar virtues. Long himself once created an impressive computer model illustrating how the marlin’s backbone helped the fish achieve its awe-inspiring swimming and leaping speeds, only to have a revered elder scientist note, “it appears to me that you’ve created a perpetual motion machine.” Robots, as Long points out, can’t violate the laws of physics. Instead of operating in a simulation of a physics-compliant environment, robots simply exist in the real universe, and must therefore play by the rules as a matter of course. At the same time, robots can be simplified to the degree that certain characteristics can be observed in isolation.

The main thing Long uses his robots to study is evolution. His first robot-fish experiment involved creating a bunch of large, tadpole-like “Evolvabots” designed to do one thing: swim toward a light source. With his team of students and fellow scientists — Long makes a point of mentioning the names of everyone who made significant contributions to his projects, a big departure from spotlight-hogging senior-scientist tradition — he rated their success at this imitation of “food-seeking” behavior. The robots (called Tadros) were given tails of varying degrees of stiffness and length and were then “mated” (algorithmically) over several generations to see if this would lead to selection for certain kinds of tails. The hypothesis Long and his colleagues wanted to test was that primeval invertebrates evolved backbones because it improved their ability to feed.

The experiment didn’t work out as they’d hoped, mostly because, in designing the experiment, the scientists had failed to fully appreciate a factor called wobble. One of the most intriguing and important aspects of “Darwin’s Devices” is the way it places the reader in the lab, at the shoulder of people doing hands-on science, sharing in their frustrations (over disappointing data, recalcitrant grant committees and astutely critical colleagues), their successes and their failures. And Long does this so lucidly that you find yourself caught up in the process, grasping the basics and eager to learn the results. It’s the best depiction of how science really works that I’ve ever read.

“Darwin’s Devices” could also administer a chastening rebuke to the many laypeople who talk and think sloppily about evolution. Determining exactly how growing a backbone helped ancient invertebrates thrive might seem superfluous to the quick-and-dirty school of cocktail-party Darwinism. Obviously, backbones helped because otherwise vertebrate animals would never have evolved. But as “Darwin’s Devices” illustrates, we can easily mistake the reasons for the evolution of certain traits by jumping to what seem like “logical” conclusions, and natural selection is not the only evolutionary pressure applied to a species. There are times when you just have to build something to understand how it works.

For example, the next type of robot Long and his colleagues developed they named Madeleine (because it is shaped, roughly, like the little French cakes). Madeleine had four paddles at each corner of its body, much like the extinct plesiosaur, a marine reptile. This creature was a tetrapod: a sea-dwelling animal descended from land-dwelling ancestors. Living aquatic tetrapods include whales, dolphins and sea otters, but “none of the living aquatic tetrapods ever use all four appendages to swim underwater — they only use two.” With Madeleine, the researchers hoped to figure out why this is so, since “it sure seemed like using four flippers for propulsion should be better in almost any way imaginable.”

It isn’t, actually, and that launched yet another branch of inquiry about why the plesiosaur used four flippers at all. If it’s that easy for legitimate scientists to be mistaken about something as seemingly simple as four-flippered locomotion, you can see why so many of them regard popular but highly speculative pastimes like evolutionary psychology as pseudoscience.

One party who has found the activities of Long and his robotics lab keenly interesting is the U.S. government. It’s not a big leap from “robot fish” to the notion of defense applications, and Long, despite a youthful infatuation with all things military, finds this troubling. But not that troubling! After a bit of hemming and hawing about it — noting that, if over 50 nations are pursuing military robot research, then American scientists can’t afford to opt out — he plunges into rampant (and, I must say, fascinating) theorizing about what sorts of robots would work best in battle. They need to be complex enough to cope with contingencies, but simple (i.e., cheap) enough that commanders aren’t afraid to burn through them.

Long ends with these cautionary words: “The reality is that evolving robots are and will be created for academic, industrial and military purposes. This means that we should all become students of robots of any kind, whether they be evolving robots, nonevolving autonomous robots, or semiautonomous and remotely controlled military robots. We need to understand robots so we can proceed with due caution and deliberation.” Yikes! And probably true. “Darwin’s Devices” will get some of us, at least, a little closer.

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Laura Miller

Laura Miller is a senior writer for Salon. She is the author of "The Magician's Book: A Skeptic's Adventures in Narnia" and has a Web site, magiciansbook.com.

Miss USA contestants: Unevolved?

The contestants were asked whether evolution should be taught in schools. Here are our winners and losers

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Miss USA contestants: Unevolved?

The Miss USA pageant crowned its annual winner on Sunday, but the contest is drawing new attention  for a video of all 51 contestants wrestling with the question, “Should evolution be taught in schools?” The results, as you might expect, are all over the place. To wit: While only a couple said a definitive “no,” dozens more squirmed through answers — trying as hard as possible not to offend anyone — before arriving at the common conclusion that evolution should be taught alongside “alternative beliefs.”

We watched through the video, and decided — in the keeping with the pageant theme — to hand out awards.

Winner: Lauren Carter, Miss Vermont, who said:

I think evolution should be taught in schools, because not everybody has the same religious backgrounds, and it’s important to have scientific facts about the world. We do know that evolution exists even on the small scale, like … bacteria that are becoming resistant to drugs and what not, so [we] might as well learn about it.

(Carter earned bonus points for referencing micro-evolution.)

Worst Answer: Kia Hampton, Miss Kentucky, who said:

I honestly don’t think you can ever have too much knowledge on any subject. That’s my personal view. But I do feel that evolution shouldn’t be taught in school, just because there are so many different views on it, so many definitions. How do you teach a child the true meaning of evolution when so many different cultures have their different beliefs, and sciences have their different theories. It’s just not a good subject that I feel everyone would agree on in classrooms, when kids come from all different backgrounds, different cultures, different beliefs. So, I just personally don’t think its a good topic for school, at all.

Weirdest Answer: Sarah Chapman, Nevada, who said:

I think evolution can be taught in many different ways. It doesn’t necessarily have to be about people, and how people evolved. It can also be about [how] communities [evolved] as well.”

Overall, we counted 24 answers in favor of teaching evolution in school and 3 against, with 24 equivocating to some degree — oftentimes, but not always, arguing the impossible but impossible-to-argue-with goal that  everything should be taught. The contest’s winner, California’s Alyssa Campanella, answered with an unequivocal “yes.” Runner-up Miss Tennessee said that evolution should be taught, but people should be able to decide for themselves. (We also counted that as a “yes.”)

As an addendum: It does bear mentioning that even among the women who answered in the affirmative, many seemed to be under the impression that evolution is not already taught in schools. That, in fact, might have been the most head-scratching thing about the video. Oh, well…

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Time-travel sex: Bad for sea monkeys

Study shows female brine shrimp survive longer when they don't mate with "males from the future or the past"

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For a new study set to be published in the journal Evolution, scientists from the Center for Functional and Evolutionary Ecology in Montpellier, France, mated female brine shrimp (“sea monkeys”) with males from past and future generations.

The report, called “Male-Female Coevolution in the Wild: Evidence from a Time Series in Artemia Franciscana,” found that the female brine shrimp “survived better and had longer interbrood intervals when mated with their contemporary males compared to when mated with males from the future or the past.” Its formal conclusion: “[T]he process of male-female coevolution, previously revealed by experimental evolution in laboratory artificial conditions, can occur in nature on a short evolutionary time scale.”

How is it possible for females of a species to breed with males from past or future generations? For brine shrimp, it’s actually easier than you might think. Science writer Carl Zimmer explains:

Brine shrimp produce tough eggs that can survive through droughts for years and then hatch into healthy young when water returns. In the Great Salt Lake in Utah, the brine shrimp egg cysts form layers on the lake bed going back decades. [Study leader Nicolas] Rode and his colleagues gathered cysts from layers that formed in 1985, 1996, and 2007. They brought the cysts back to their lab and reared the sea monkeys. And then they orchestrated some sea monkey sex. They had females mate with males from their own time, as well as from the other years. For example, females from 1996 could mate with males from 2007 and 1985.

What happened next? Zimmer summarizes:

Rode and his colleagues … discovered … that having sex with males from another time is bad for a sea monkey’s health. The further away in time the sea monkeys were, the sooner the female sea monkey died. When the male traveled 22 years to mate with a female, her life was cut short on average by 12%.

The report’s suggestion that female shrimp are better suited to mate with their contemporaries than with males from the past or future seems to corroborate the theory that “sexual conflict is an ongoing process,” with males and females adapting new mating “strategies” in concert or in competition with each other over time, Zimmer writes — although it’s still not clear what sort of pattern the conflict might follow (nor is it obvious, in this particular case, exactly “how the time-traveling males [harmed] the females”).

Just to be safe, though: If your dream historical dinner party with Cleopatra, Henry VIII and Napoleon ever does happen, you might want to consider heading home early.

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Emma Mustich is a Salon contributor. Follow her on Twitter: @emustich.

Five signs your Republican governor wants to be president

Did he suddenly express doubts about evolution or develop an interest in bombing foreign countries? Watch out

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Five signs your Republican governor wants to be presidentChris Christie and Jon Huntsman

Chris Christie, a wealthy, well-educated lawyer from New Jersey, is suddenly not willing to say whether or not he believes in biological evolution. Christie went to a very good public high school and he’s a mainstream American Catholic, not an evangelical Protestant, so I am going to guess that he does believe in evolution, if he ever even gives the idiotic question any thought. I’d also guess that believing in evolution is not particularly controversial among New Jersey Republicans, who are not exactly Kansas Republicans.

So why hedge? Well, someday — maybe someday soon — he may want the support of Kansas Republicans. And sometimes, successful Republican politicians begin debasing themselves to win the votes of far-right rubes well before they begin forming exploratory committees.

Here are some signs that your formerly rational Republican governor (or former governor, or mayor, or representative) might be planning a presidential run:

Candidate develops doubts about evolution

Evolution, a scientific fact, is not recognized by one of America’s two major political parties, and a majority of Americans are either creationists or at least express “doubts” about evolution, so it just makes sense for people seeking the Republican nomination to align themselves with people who think the Earth is 10,000 years old.

But belief in evolution correlates to education level, and most of the elites in politics and media are well-educated, so you don’t want to become a creationist — then you will be mercilessly mocked — you just need to signal your tacit support for creationism and promise to let it be taught in schools. Just like Chris Christie did!

Candidate suddenly agnostic on or openly hostile to climate science

Not that long ago, most Republicans agreed that climate change was real and something should be done about it. Nearly everyone currently running for the Republican nomination supported cap-and-trade, which was the moderate alternative to a proper carbon tax. Now, though, not so much!

Now, even those who still profess to believe in climate science think the government shouldn’t do anything to stop it (the “reasonable” Jon Huntsman approach) and the rest of them no longer think climate change is happening, because Al Gore, who is fat, is also now divorced (the shameless Gingrich approach).

Candidate suddenly has opinions about foreign policy

A governor does not really need to know what to do about Iran or North Korea, but if one suddenly starts telling everyone his or her ideas about what to do about Iran and North Korea, this governor is probably dreaming of the nation’s highest office. (Or at least a Senate run.) If those ideas seem to just involve bombing everyone, everywhere, this guy’s serious! (If the candidate becomes a paleocon isolationist instead, no one will allow them anywhere near the nomination.)

Another hint: A non-Jewish politician suddenly becomes deeply, passionately interested in Israel.

It’s a red alert if your governor reveals these positions in a book of some kind.

Candidate no longer thinks the government has the right to collect revenue on anyone by any means

Most governors and state legislators have to balance their state budgets, and to balance state budgets during horrible times like these, lots of taxes (often renamed, as in Tim Pawlenty’s Minnesota, “fees”) are necessary. But current Republican orthodoxy has it that any taxation, at all, on anyone, is a tyrannical attack on LIBERTY itself.

So they will defend their “fee”-raising as not taxation while demanding that the national deficit be taken care of within three years without a single tax increase on any American. That is leadership. (Plus, you want Grover Norquist on your side.)

Candidate no longer likes transportation projects

Sure, free federal cash for a major infrastructure project sounds great on paper, and also in reality, but Republicans hate trains now, so you better turn that money down, even if you formerly campaigned for it. Trains are for Europe!

If your governor checks off two of these, get worried. If he or she hits three, get ready for the major Politico story on the Republicans Secret Weapon (or Reluctant Best Shot).

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Alex Pareene

Alex Pareene writes about politics for Salon and is the author of "The Rude Guide to Mitt." Email him at apareene@salon.com and follow him on Twitter @pareene

The science of the smooch

Why mash our mouths together? An expert explains the evolutionary reasons for kissing, and why men like more tongue

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The science of the smoochclose up portrait of young caucasian couple kissing(Credit: Serg Zastavkin)

Let’s be honest, a kiss is never just a kiss. It is the ultimate romantic symbol in our culture — from Shakespearean tragedies to Gustav Klimt’s gilded embrace to the legendary V-J Day smooch in Times Square to those critical words “you may kiss the bride.” Sometimes it’s instead an expression of affection, elation, loyalty or, on the other hand, disloyalty (see: the kiss of Judas). In cruder manifestations — take Britney and Madonna’s lip smacking, and the tonsil hockey of modern reality television — it’s a way to scandalize. But despite this breadth of meaning, we have very rigid ideas of what types of kissing are appropriate and acceptable — as Stephanie Seymour recently discovered after photos circulated of an ocean-side embrace with her son.

This rich cultural history makes kissing seem so natural as to be fairly unremarkable, which is why many readers will greet the new book “The Science of Kissing: What Our Lips Are Telling Us” with skepticism. How much is there to say about locking lips, anyway? A whole lot, it turns out. Sheril Kirshenbaum, a research scientist at the University of Texas at Austin, gives an engaging overview of the possible evolutionary basis for two people mashing their mouths together — a practice that is actually pretty odd, once you think about it. There’s the way sexy red lipstick plays on our hunter-gatherer past, how swapping spit can help us develop immunity against disease and why it might have first developed as a way to literally sniff out genetically appropriate sexual partners.

That’s not to mention the tremendous variety in kisses the world over — from the Eskimo to the French variety — and that’s just in the human world (bonobos, for example, will suck on each other’s tongues for as long as 12 minutes). Salon spoke with Kirshenbaum about how our lips are “genital echoes,” the natural high of making out with a longtime crush and how technology will change kissing.

What is it about lips, why are we so drawn to them?

There are several theories. For starters, psychologists will tell you that red grabs our attention. I spoke to a neuroscientist and he thought it might have something to do with our ancestors looking for ripe fruit. Those that could detect the color red could find food the fastest and they had an advantage and survived to pass on their genes, and that might be why we notice the color red.

Red became pronounced in different areas of the body, and it became a sexual cue over time. Certain parts of the female anatomy, especially with our primate ancestors, were enhanced with red, and it especially had to do with the female being ready to reproduce. As our ancestors began to walk upright, rather than males being attracted to the female’s posterior, they began to focus on the breasts and the lips — they call this “genital echoes.” In research on lip color, men consistently choose the women wearing the bright red lipstick as the most attractive — there’s this power to making the lips slightly redder. There’s a lot of evidence to back up the existence of the makeup industry.

Much to my surprise, you make a connection between kissing and breast-feeding. Can you explain that?

Nursing is a very pleasurable activity. The lips are so sensitive to stimulus, and the hormone oxytocin, which is involved in social bonding and attachment, is stimulated in the infant and the mother during nursing. We start to associate this bonding with lip pressure. As adults, when we kiss there’s this rise in oxytocin, which is so important in new relationships and in maintaining relationships. Nursing is very important in putting those neural pathways in place. When our lips are stimulated later in life there are these associations with those early experiences.

What about non-romantic kissing?

It’s a really powerful means of expressing yourself. All of our senses are engaged in the behavior. Traditionally, scent was so important in terms of recognizing our friends and family members. In prehistory they were using scent to recognize each other and assess the health of someone. Social kissing probably evolved from a sniff to cheek kissing. It’s one of the most powerful things we can do to connect with another individual.

How do kissing styles vary from culture to culture?

The mouth-to-mouth kiss that we recognize is definitely not the only universal style of kissing. Charles Darwin wrote about this: He suspected that if you talk about kissing in terms of touching the lips to any body part, and even behaviors like licking and blowing, then it’s probably a universal practice.

Traditionally, many cultures around the world didn’t mouth-to-mouth kiss. It was probably not the same experience before there was mouthwash [laughs]. I went into all these historical accounts written in the 1800s, mostly by European explorers. There’s this great anecdote where an explorer goes to Africa and falls in love with the daughter of an African king, and one night he’s brave enough to kiss her. She reacts by screaming and running from the room. He realizes later that she thought he was planning to eat her.

Has kissing changed much over time? Do certain styles of kissing come into fashion?

Well, I love the French kissing story. It turns out that when people were traveling through Europe, there was this notion that women in France were more openly affectionate. There became this saying: “While in France, get the girls to kiss you.” That sort of evolved to be: “Get a French kiss.” But in France they don’t call it that, they call it a “tongue kiss” or a “soul kiss,” because it’s supposed to feel like two souls merging.

What happens physiologically when we kiss?

A lot. It depends on the kind of kiss, of course. If you’re talking about a good kiss, our pulse quickens and our pupils dilate, which is probably part of the reason we close our eyes. There’s also a rise in dopamine, which is responsible for the craving and longing, that can’t-wait-to-be-with-you sensation. It’s also stimulated by a lot of recreational drugs like cocaine; kissing sends us on a natural high. Dopamine spikes from really longing for something for a while and then getting it. When we’ve been dreaming about someone for a long time and then finally get it, dopamine is involved.

Serotonin causes obsessive feelings about someone. It’s also the same neurotransmitter involved in people with obsessive-compulsive disorder. It sounds a lot like the symptoms of falling in love. Everyone loves to talk about sex, but kissing is probably the most intimate activity we can engage in. Look at the history of prostitution — prostitutes won’t kiss their johns because they don’t want to get their emotions involved. And, overall, johns aren’t that anxious to kiss their prostitutes either.

There’s a strong gender divide in how we view kissing, isn’t there?

Absolutely. There’s a huge gender divide. In one large study of college-age students, strong patterns emerged: Women were constantly complaining about too much tongue and men were saying, “I really like wet kisses, lots of saliva!” The guys were usually eager to foray into sex without kissing and very few women were. Women paid a lot more attention to the teeth and breath of the person. Men tended to say they would consider starting a relation with someone just because they were a good kisser, and women were not that way. The act of kissing has a lot more significance for women than men. Men tend to report that kissing is a means to an end; women tend to try to figure out what the kiss means about their relationship, what it says about how their partner feels toward them.

Why might this be?

I started getting really frustrated by these findings, because I felt the results were very stereotypical. So I got together 80 of my own friends and acquaintances, and I was pretty shocked to see that they fell almost completely in the same pattern. When you start looking at reproductive strategies, it makes sense: A woman puts a lot more investment into the [sexual] decisions she makes, because she is fertile for a much shorter period of time each month, and a man can theoretically inseminate countless women throughout his life. Women are a lot more sensitive to smell and taste, which can tell a lot about a partner’s health and reproductive capacity.

There’s a great study looking at attraction and scent. It turns out that women are able to identify men who have a very different genetic code from their own, and they tend to be more attracted to them, because if they mate, their children would be healthier and stronger and more likely to survive because of the diversity in their genetics. Interestingly enough, women who are taking the birth control pill seem to have the opposite reaction. They’re more attracted to men with genetic immunities similar to their own. It starts to make you wonder what all these hormones that we take are starting to do to our bodies and whether they’re masking these signals that we’ve developed over thousands and thousands and thousands of years. I came across some pieces asking, “Is it possible that for some couples divorce is a result of the woman going off hormones and all of a sudden feeling less attracted to her partner?” It’s certainly an important question to ask.

What can we expect from the future of kissing?

There are robots that are very eerily lifelike and starting to be able to kiss each other — it’s pretty convincing when you see the actual video. In terms of virtual reality, it might be possible that it could feel like you’re kissing your idealized partner or celebrity.

Just last year, a robot debuted called Roxxxi. She’s supposed to be the first sex robot. I called up the company and spoke to the engineer because I wanted to know whether she could kiss. His response was, “No, but her mouth is one of three inputs.” It turns out kissing was not something they had programmed in. At the time they were about to debut their robot geared toward women and, given all this psychological research, it might be something that women clients would be more interested in seeing.

Speaking of technological changes, what about online dating — how is it changing the courtship process?

Many of my friends were going online looking for love just as I was learning about all these important cues other than what we see in a profile — things like voice and touch and smell taste. We are flying blind when we’re dating online. We’re only able to see a photo and a carefully worded profile. You might invest a lot of time getting to know someone and it might be imminently obvious when you’re actually in the same room that it’s star-crossed, or you might pass over someone who might have seemed ideal if you’d been in the same room together. A kiss just tells you so much more than a poke or a wink — or whatever it is, depending on the service you’re using. I’ve been calling it nature’s litmus test.

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Tracy Clark-Flory

Tracy Clark-Flory is a staff writer at Salon. Follow @tracyclarkflory on Twitter.

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