A new theory may explain how gold, platinum, and other precious metals found their way to shallow pockets within Earth’s mantle.

Special rocks called kimberlites from the deep mantle show how the rapid development of fauna 540 million years ago permanently changed Earth.

New results "suggest that Earth, like the other rocky planets Mercury and Mars, is cooling and becoming inactive much faster than expected."

"What we were interested in is, when is carbon not diamond?" Finding the answer involves something called a diamond anvil cell.

"...an evolution of the mantle of the Earth could control an evolution of the atmosphere of the Earth, and possibly an evolution of life."

The path of the Nile River has remained unchanged for about 30 million years. Now scientists know why.