For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” ...

Finding bacteria in extreme environments, like at thermal ocean vents or in the sulfur pools at Yellowstone, isn't all that novel. In 1991, remote-control robots brought out samples of pitch-black ...

The search for life beyond Earth requires expanding the very definition of what life can be. Some exoplanets, especially those orbiting cooler red dwarfs, might host purple plant life rather than the ...

Green is a sign of life on Earth, but other habitable planets could be teeming with purple microbes that we should be able to detect with telescopes. Reading time 2 minutes In a little more than 30 ...

A bacterium that can not only withstand but thrive on arsenic has been discovered by NASA scientists at the bottom of a Californian volcanic lake. That the bacteria can live on such a toxic substance ...