New conspiracy theories suggest the CIA may have accessed DNA databases like 23andMe to search for alien-human hybrids.

Science fiction stories about “alien” invaders are often political allegories for anxieties around immigration. Now, a government website depicts non-citizens as extraterrestrials.

Scientists blast the idea that consciousness is confined to human or animal brains in a provocative new paper published this ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.