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Oct 24, 2014 11:35 AM ET // Becky Oskin, LiveScience
A fossil tusk rescued from the sea proves mammoths swam to Southern California's Channel Islands much earlier than thought.
Oct 24, 2014 10:50 AM ET // Jennifer Viegas
Here are some of the animals--both on sea and on land--that existed during this mega-sized shark’s heyday.
Oct 23, 2014 04:45 PM ET // Richard Farrell
Green anole handles arrival of an invasive competitor by making better toes in a mere 20 generations.
Oct 23, 2014 11:40 AM ET // Becky Oskin, LiveScience
With fangs and the first sawlike teeth on Earth, the biggest predator in the swamps of the early Permian Period ate anything it wanted.
Oct 23, 2014 10:35 AM ET
If you want to see a cat totally lose its mind with drug-addled pleasure, give it a catnip treat. What's going on chemically that turns our feline friends into college dorm room stoners? Tara explains.
Oct 22, 2014 03:20 PM ET // Richard Farrell
Veteran photojournalist captures the fierce hunters in a quiet moment that harkens back to a bygone era for the big cats.
Oct 22, 2014 01:00 PM ET // Jennifer Viegas
A dinosaur nicknamed Horrible Hands turns out not to have been so horrible, but it sported a suite of unusual features including a humpback, super long arms and sink-proof legs.
Oct 21, 2014 07:00 PM ET // Jennifer Viegas
Our ancestor's ability to survive the mass extinction event that wiped out the dinosaurs could have important medical applications that one day could help a manned trip to Mars.
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