One of the coolest things in my sports-filled life may seem weird to many, but to the 12-year-old version of me it was off-the-charts cool. It was also a lot of work. Back in those days, and from what ...

The mantle transition zone (MTZ), which occurs 410–670 kilometers below Earth's surface, may store several oceans' worth of water. This water, which is carried to such depths by subducting tectonic ...

Coal ash in the U.S. holds substantial rare earth elements, potentially reducing dependence on imports, with ongoing research ...