If an army grew dissatisfied, the emperor was in trouble; if dissatisfaction spread further, he was finished. Civil war had brought Caesar to power. Once emperor and without an obvious heir ...

According to a peer-reviewed British Antarctic Survey report released late last week, the melting of sea ice might have caused the death of some 10,000 Emperor penguin chicks by the end of 2022.

DNA from the remains of a Chinese emperor who lived 1,500 years ago has helped scientists create a facial approximation and learn what may have caused his death, a new study finds. Emperor Wu ...