Our Earth is structured sort of like an onion – it’s one layer after another. Starting from the top down, there’s the crust, which includes the surface you walk on; then farther down, the mantle, ...

While most of us take the ground beneath our feet for granted, written within its complex layers, like the pages of a book, is Earth's history. Our history. Research shows there are little-known ...

Earthlight is a documentary produced by the University of Arizona College of Agriculture and Life Sciences and filmmaker Cody Sheehy. It poses the question: Is learning to live on the Moon the key to ...