Topic: extinct animals

Megalodon from prehistoric times scene 3D illustration, though the ancient shark probably didn't look like this. (Warpaintcobra / Getty Images)

Megalodon even bigger than we thought

Elizabeth Hlavinka
Medium Mylodon Cave or Cueva del Milodon Natural Monument a leading attraction in the Natales region, Patagonia, southern (Sergi Reboredo/VW Pics/Universal Images Group via Getty Images)

The demise of Darwin’s giant sloth

Nikolas Kozloff
Plate from 'The Zoology of the Voyage of HMS Beagle', published in London, 1839-1843, and edited by the British originator of evolutionary theory Charles Darwin (1809-1882). (SSPL/Getty Images)

The enduring mystery of Darwin’s warrah

Nikolas Kozloff
Pack of Gray Wolves (Getty Images)

How the gray wolf survived the Ice Age

Nicole Karlis
(AP/Jon Gambrell)

Is the end of the world coming?

Frida Berrigan