Arsenic is a deadly poison for most living things, but new research shows that microorganisms are breathing arsenic in a large area of the Pacific Ocean.
Researchers have discovered water in tiny dust particles from asteroid Itokawa. Japan's Hayabusa spacecraft brought the asteroid dust to Earth in 2010.
Meet Callichimaera perplexa, the platypus of crabs. It's a 95-million-year-old extinct species that, scientists say, will force us to rethink the definition of a crab.
While searching for the source of methane on Saturn's large moon Titan, researchers found a completely unexpected corridor of methane ice wrapping nearly halfway around the moon.
Eleanor Imster has helped write and edit EarthSky since 1995. She was an integral part of the award-winning EarthSky radio series almost since it began until it ended in 2013. She and her husband live in Tennessee, where they enjoy guitar playing and singing. They have 2 grown sons.