In this animated discussion, Venus, Mars, and Mercury explore the unique characteristics of Earth, focusing on why it is the ...

For now, life thrives on our oxygen-rich planet. But Earth's atmosphere won't always be so welcoming. In fact, scientists predict that Earth will eventually undergo a drastic atmospheric shift—one ...

Two of the most intriguing questions in science are: How did life on Earth begin? and Is there life elsewhere in the universe? Given the enormous interest in these questions, you might expect that the ...

Chris Impey receives funding from the National Science Foundation and the Howard Hughes Medical Institute. We have only one example of biology forming in the universe – life on Earth. But what if life ...