"Limitless: Live Better Now" with Chris Hemsworth is all about facing the challenges life presents as we grow older but, in particular, cognitive decline. The Marvel actor takes on a series of ...

"My body feels like it's burning, feels like I have frostbite," the "Avengers" star says during the icy trial. For Chris Hemsworth, it's just mind over matter. The Avengers star sets out to confront ...