Tolerance.ca
Director / Editor: Victor Teboul, Ph.D.
Looking inside ourselves and out at the world
Independent and neutral with regard to all political and religious orientations, Tolerance.ca® aims to promote awareness of the major democratic principles on which tolerance is based.

Sharks that hunted near Antarctica millions of years ago recorded Earth's climate history in their teeth

By Sora Kim, Assistant Professor of Paleoecology, University of California, Merced
Share this article
Tens of million years ago, sand tiger sharks hunted in the waters off the Antarctic Peninsula, gliding over a thriving marine ecosystem on the seafloor below.

All that remains of them today is their sharp pointed teeth, but those teeth tell a story.

They’re helping solve the mystery of why the Earth, some 50 million years ago, began shifting from a “greenhouse” climate that was warmer than…


Read complete article

© The Conversation -


Follow us on ...
Facebook Twitter