The signal showing Himalayan ice loss linked to rising temperatures would not be so clear if it weren’t for the U.S. spy satellites—KH-9 Hexagon military satellites from 1973 to 1980 to be ...

A mass extinction event wiped out around 90% of life. What followed has long puzzled scientists: The planet became lethally ...

A fresh set of numbers is changing what scientists thought happens when a city‑sized slab of ice dissolves into the sea. The ...