Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

Dramatic theories have been proposed to explain the mysterious interiors of Uranus and Neptune, the ice giants of our solar ...

Deaths of nearby massive stars may have played a significant role in triggering at least two mass extinction events in ...

The Antarctic ozone layer is currently healing, as a result of global efforts to reduce ozone-depleting substances.

Keep reading to learn more about Earth's different layers, its atmosphere, and what makes the "blue planet" unique. Earth is made out of different layers, and those layers get hotter and more ...