Nanosize diamonds have been discovered in the Greenland ice sheet, according to a new study. The finding adds credence to the controversial hypothesis that fragments of a comet struck across North America and Europe approximately 12,900 years ago.
Nanosize diamonds have been discovered in the Greenland ice sheet, according to a new study. The finding adds credence to the controversial hypothesis that fragments of a comet struck across North America and Europe approximately 12,900 years ago.