Physics Offers New Look at T. rex Arms: Weapons not Waste

With a gargantuan head flaunting the largest teeth of any predatory dinosaur, Tyrannosaurus rex embodies the ideal nightmarish horror. So, what was such a ferociously large animal doing with such tiny forelimbs that look more like a humorous afterthought than an evolutionary tool? "Some people think T. rex forearms are just vestigial organs which evolved away, but I claim no," said Scott Lee, a professor of physics at University of Toledo, who argues that a T. rex could move its forearms quickly...