The high ground has always held strategic and tactical importance—from mountaintops in ancient battles to the orbital vantage ...

Air conditioning can feel heaven-sent on hot summer days. It keeps temperatures comfortable and controls humidity, making ...

Small grains in the Murchison meteorite have been estimated to be 7 billion years old—much older than the Earth, and even the ...

From ancient skulls that rewrote our origins to a 4,500-year-old papyrus that helped build the Great Pyramid, these six ...

In 1927, Einstein used a variant of the double slit experiment – at that time only a thought experiment – to argue that ...

Beneath the streets of Los Angeles lies one of the most prolific fossil sites in the world. At the La Brea Tar Pits, millions ...