Sue, the biggest, meanest meat-eating dinosaur known to history, probably was not killed by some other monster after a battle 65 million years ago, as scientists and schoolchildren used to believe.
Instead, the Field Museum’s celebrated Tyrannosaurus rex may have died with a whimper, felled by a puny, one-celled parasite that gave her a killer sore throat. In fact, she may even have starved to death.