Richard Henry, one of a critically endangered species of parrot, has died at age 80. He's credited with helping to save his species from extinction. R.I.P. Richard Henry.
An analysis of ancient climate records suggests future global warming might be more severe than most scientists now suspect. Read more on future warming.
Chimps and humans have similar genes. Genetically, we're 97% identical. So why are we so different? The answer has to do with how our genes work and interact.
Dee Boersma - sometimes called "the Jane Goodall of penguins - said 2010 was a hard year for Punta Tombo penguins. This is one of the world’s largest breeding colonies.