Underwater Fossil Graveyard Reveals Toll of Human-Caused Extinction

On Abaco Island, a graveyard of fossils at the bottom of a flooded sinkhole suggests that humans caused more animals to go extinct than natural changes in the climate, the researchers said. The new study, published today (Oct. 19) in the journal Proceedings of the National Academy of Sciences, shows that 17 species, all of them birds, disappeared from Abaco during the transition from the Pleistocene to the Holocene epoch. "These animals could make it through the natural changes of the ice age to