What does someone look like when they lie? Their face might turn red, they may stare at the ground, or maybe they’re good at it. You might not even notice unless you were looking at a polygraph test....

Can humans grow food on Mars in the same way that Matt Damon’s character did in the popular new movie “The Martian”? University of Arizona scientists say yes, but not necessarily in the fashion that...

At age 15, Nick Korte came home with his driving learner’s permit, nagging his parents for consent to become an organ donor at the first opportunity. Five years years later, on Nov. 9, 2012, he was brain...