How hot water caused mass extinction
Scientists think they’ve figured out the falling dominoes that led to Earth’s largest mass extinction and worry humancaused climate change puts the planet on a similar path.
Some 250 million years ago, about 90 per cent of sea life and 70 per cent of land life went extinct in what is now called the Great Dying.
A new study in yesterday’s journal Science used computer simulations to plot out what happened after the volcanoes blew: It led to ocean temperatures rising by about 11C degrees, which then starved the sea of oxygen. That hot oxygen-starved water caused the mass marine die-off, especially farther from the equator. After the volcanoes blew, the level of heat-trapping carbon dioxide soared to more than 12 times what it is today , said study lead author Justin Penn.