It's tiny and needy, but is it alive? That's a question prompted by recent research that highlights a surprisingly complex part of biology. The organism in question is a microbe called Sukunaarchaeum ...

Challenge your mind right now. Come up with a brief, meaningful, and defensible definition of life. Try it. How hard can it be? You know life when you see it, right? You are life. So put that search ...

We live in a golden age for space exploration. Scientists are gathering massive amounts of new information and scientific evidence at a record pace. Yet the age-old question remains unanswered: are we ...