jul 132012
 
The Source of Earth’s Water is... Solar System Ice

  Scientists have long believed that comets and, or a type of very primitive meteorite called carbonaceous chondrites were the sources of early Earth’s volatile elements—which include hydrogen, nitrogen, and carbon—and possibly organic material, too. Understanding where these volatiles came from is crucial for determining the origins of both water and life on the planet. [continue reading]

apr 012012
 
Discovery shakes beliefs of Earth to the core

For a century, scientists have assumed that the Earth has same chemical make-up as the sun. But this belief has been challenged by scientists at The Australian National University. Photo by Flickr/FlyingSinger For a century, scientists have assumed that the Earth has same chemical make-up as the sun. But this belief has been challenged by [continue reading]