Add Yahoo as a preferred source to see more of our stories on Google. Tardigrades—a type of invertebrate also known as water ...

Steven Spielberg's claims that aliens have already visited Earth have drawn a mixed but pointed scientists' reaction this week ...

When astrobiologists are asked what aliens might look like, many now point not to distant galaxies but to some of the strangest ...

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