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Topic: evolutionary history

Tyrannosaurus-rex (Getty Images)

Scientists just did a T. Rex census

Matthew Rozsa
Pack of Gray Wolves (Getty Images)

How the gray wolf survived the Ice Age

Nicole Karlis
A walking Epaulette Shark (Hemiscyllium freycineti) crawls across the seafloor in Raja Ampat, Indonesia. While this shark isn't the newly discovered species, it is one of the nine separate but closely related species of shark that can all walk. (Getty Images/Ethan Daniels/Stocktrek Images)

Sharks are learning to walk

Nicole Karlis
Puffins (Jeff J Mitchell/Getty Images)

Seabirds have learned to use tools

Nicole Karlis
(AP/Martin Meissner)

Neanderthal healthcare for all

Nicole Karlis