Category Archives: geohazards

Just to prove that it’s not a good week for high-impact asteroid theories, John Hawks points to a piece in Science which discusses a growing scepticism about Firestone et al.‘s proposal in PNAS last year that the Younger Dryas – … Continue reading →

The question of whether chevrons and their associated deposits are formed by tsunami is of more than just academic importance; if they are, then we may be severely underestimating the average frequency of events capable of causing destructive tsunami (be … Continue reading →