A chilling mystery deepens as investigators unveil a $100,000 reward in the baffling disappearance of Nancy Guthrie. New clues hint at a breakthrough.

NASA's Carbothermal Reduction Demonstration (CaRD) project has completed an important step toward using local resources to support human exploration on the moon. The CaRD team performed integrated ...

Living organisms share an ancestor called the last universal common ancestor, or LUCA. LUCA is estimated to have lived ...

Two dozen journalists. A pile of pages that would reach the top of the Empire State Building. And an effort to find the next revelation in a sprawling case.

Plot twists are supposed to happen in movies and books—carefully planted and revealed at the perfect time. But real life has ...