Celebrity physicist Stephen Hawking says humans should return to the Moon by 2020 and Mars by 2025 in order to unite humanity in the shared purpose of spreading out beyond Earth.
"Spreading...
Scientists from several U.S. and Chinese universities say new findings about microbes and their interaction with other species show that Darwin's theory of evolution needs an update.
Their contention is based on...
NEW YORK — Teen vaping, which has been skyrocketing, fell dramatically last year in the United States.
A government survey released Thursday suggests the number of high school and middle school students using...
