Nanodiamonds point to comet catastrophe
Scientists have long blamed climate change for the extinctions, for it was 12,900 years ago that the planet’s emergence from the Ice Age came to a halt, reverting to glacial conditions for 1,500 years, an epoch known as the Younger Dryas. Now the proponents of this apocalyptic scenario say they have found a new line of evidence: nanodiamonds.
