Why might the U.S. be interested in deep-sea mining, and what are the environmental risks? Here's what you need to know.

Only a tiny percentage of the ocean floor has been carefully mapped ... of oil and gas deposits probably found there, it needs to map those realms. Exploration and mapping, and making the data ...

Remnants of a liquid layer of magma near Earth's core, formed in the first few hundred million years of the planet's history, ...

The U.S. government has an official plan for a zombie apocalypse Think The Walking Dead is straight-up fiction? Well, it ...