Discovering Doomsday
Most researchers agree that the asteroid struck earth 66 million years ago and wiped out most of the dinosaurs and life before. However another theory showed that dinosaurs were actually dying off before impact.
In 2016 a never-ending debate erupted which explained that, as new dinosaurs evolved, some were declining. Most dinosaur species were dying out and not reaching evolution like they assumed. In conclusion of this research scientist found that some large plant-eating dinosaurs started dying 50 million years before the Chicxulub, so much for the big bad scary comet being the big bang of extinction.