The dinosaur-killing asteroid that struck Mexico’s northern Yucatán peninsula 66 million years ago sent an extraordinary amount of sulphur aerosols into the Earth’s upper layers, according to a new study, effectively “blott[ing] out the Sun” and causing global cooling for years to come.
Scientists have long implicated fine sulphate particles in the stratosphere as the main driver for the massive climate change event that spurred mass extinction, killing 75 per cent of the Earth’s animals.
