Posted by Jennifer Viegas Mon Aug 15, 2011 10:36 AM ET | 0
Agriculture and hunting appear to be the main culprits in the animals' steep decline. Read more

Posted by Jennifer Viegas Wed Aug 11, 2010 01:00 PM ET | 0
Small-brained human ancestors used stone tools to whack into large mammals 800,000 years earlier than previously thought. Read more

Posted Tue Jun 30, 2009 09:24 PM ET
New research on the fossil of a three-million-year-old human fossil suggests a fondness for nuts. Read more

Posted Tue Jun 30, 2009 09:24 PM ET
A new study of Triceratops fossils reveals that the animals used their horns and bony head shields for sparring with one another, just like modern-day antelopes and sheep. Read more

Posted Tue Jun 30, 2009 09:24 PM ET
A small population of mountain gorillas is growing despite bloody conflict in the Democratic Republic of Congo. Read more

Posted Thu Sep 18, 2008 05:13 AM ET
The first-ever population count for kangaroo rats, an environmental bellwether species, will be taken from outer space. Read more

Posted Sat Aug 23, 2008 05:13 AM ET
The world's first known modern human was a tall, thin individual -- probably male -- who lived around 200,000 years ago and resembled present-day Ethiopians, save for one important difference: He retained a few primitive characteristics associated... Read more

Posted Fri Aug 1, 2008 10:53 AM ET
The fading glory of the world's great migrations is a tragedy for people and the environment, say conservation experts. Read more

Posted Thu Nov 29, 2007 06:07 AM ET
Conventional wisdom doesn't always get it right: Among antelopes, it's the males who play hard to get. Read more

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