Modern sloths hang out in trees, move at a slow pace and eat a vegetarian diet -- but the same thing can't be said for their extinct relative, Mylodon. This ancient ground sloth, which lived in South ...

I've heard it time and time again that 'the early bird gets the worm,' but I know I'm not the only one who feels less productive the earlier I wake up. I won't deny that I'm not a morning person, but ...