The aerospace giant says it can revive Mars Sample Return with a leaner, lower-cost approach drawing on proven designs.

The U.S. has just opened its first rare earth mine in more than 70 years.

But there has been one big mystery: Earth’s inner core, a solid ball of iron, only began to form about a billion years ago.

The Pools of Ivrin were a magical location that would have helped Frodo Baggins, but they were destroyed by a dragon before ...

10 Coolest Video Game Features (That Are Utterly Pointless) - Commenter Edition ...