Blue and Green: The acidification of the worlds oceans, occurring today because of manmade carbon emissions, is happening 10 times faster than it did 56 million years ago, when many species were wiped out as a result.
Around 9 million years after the extinction of the dinosaurs, between the Paleocene and Eocene epochs, a mysterious climate event caused global temperatures to soar and killed off many forms of marine life.
Scientists are uncertain of the causes of the PaleoceneEocene Thermal Maximum (PETM),...