Modern astrobiology suggests that alien life would evolve under many of the same ruthless pressures that shaped organisms on Earth. Scientists expect traits like symmetry, vision, camouflage, ...

Add Yahoo as a preferred source to see more of our stories on Google. Tardigrades—a type of invertebrate also known as water bears—are the only animals observed to survive the intense radiation and ...

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

For generations, science fiction has imagined what life might look like on other worlds. These aliens are fictional, sure, but some of them are informed by real evolutionary processes on Earth. That's ...