A Mars-size object called Theia smashed into Earth, and the debris coalesced into the moon. Now scientists believe they may have identified pieces of Theia at the bottom of Earth’s mantle. A new study ...

December 10, 2025 • From nuclear fission to GPS to the internet, it’s common knowledge that many of the most resource intensive technologies of the last century got their start as military R&D ...

A bite-sized show about big ideas. From the people who make Planet Money, The Indicator helps you make sense of what's happening in today's economy. It's a quick hit of insight into money, work, and ...