Mars has never looked more like a planet built for hiding secrets. A cluster of eight vast, water-carved caves appears almost engineered to shield fragile chemistry, or even biology, from the brutal ...

Just off a quiet Aegean shoreline, scientists have stumbled onto a seafloor landscape that looks less like a Mediterranean ...

Here are five of the biggest changes taking effect: The Trump administration unveiled a proposal in September to change how H-1B visas are awarded, a program that has become a cornerstone of the tech ...