Alphabet, Inc. is a holding company, which engages in software, health care, transportation, and other technologies. It operates through the following segments: Google Services, Google Cloud, and ...

A new fossil and DNA analysis traces how dozens of sloth species responded to climate shifts and humans. Just two small tree-dwelling sloths remain today.

Ancient Chinese astronomer Shi Shen’s star catalog, known as The Star Manual of Master Shi, is now considered the oldest star ...