Dino-killing asteroid plunged Earth into super winter: Study
The asteroid impact in the Gulf of Mexico that wiped out the dinosaurs 66 million years ago, likely released climate-altering sulphur which cooled the Earth into sub-freezing temperatures, an international team of researchers has found. Researchers simulated the impact to calculate the release of gases, which showed surface air temperatures dropped by 26ÂºC and persisted for at least three years.