It's been 66 million years since dinosaurs roamed the Earth, and many may blame an asteroid's explosive collision with our planet for the end of the creatures' reign. But for years, scientists have debated whether the meteorite alone is responsible for one of the most infamous mass extinction events in history, or whether other more earthly forces played a part as well. Reigniting the debate, a recent study posited that volcanic eruptions may been to blame. Read more at the link in our bio.