Why can’t it always be summer? It’s all about the Earth’s tilt
2 Russians set record for longest single stay on the International Space Station
Whales May Be Communicating Across Vast Distances
Rare Florida fossil finally ends debate about how porcupine jaws and tails evolved
Scientists in South Africa say they have identified the first known outbreak of rabies in seals
Scientists looked deep beneath the Doomsday Glacier. What they found spells potential disaster for the planet
Fall equinox: Why the first day of fall isn’t as equal as you might think
Youth activists plan protests to demand action on climate as big events open in NYC
