Sauropods were previously thought to have had their heyday in the Late Jurassic period. Recent fossil evidence says it was probably much earlier than that.
Scientists study organic material from the Chicxulub crater to identify the microbes that lived within it, to understand what happened to the Earth when that giant asteroid killed all the dinosaurs.
Be grateful you didn't live at the same time as a T-rex, because it's superior biting strength could really mess you up. Scientists at Oklahoma State and Florida State collaborate to understand why that is.