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 ...

A minute after I opened my computer, it started screeching. The three loud alarms were accompanied with flashing mushrooming blobs. I felt my heart clutch. No. No. NO-O-O-O-O! I was sure it was a ...

The first extraterrestrial life we find may not be little green men—but microbes lurking beneath alien ice or deep in toxic clouds. Life on Earth thrives in boiling springs, acidic lakes, and ...