© Science Admins '07-09-27, 05:00Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling '09-10-27, 05:00The Case for the Younger Dryas Extraterrestrial Impact Event: Mammoth, Megafauna, and Clovis Extinction, 12,900 Years Ago '11-06-01, 05:00The Younger Dryas impact hypothesis: A requiem '12-07-01, 05:00PNAS Plus: Very high-temperature impact melt products as evidence for cosmic airbursts and impacts 12,900 years ago '13-03-28, 05:00Arguments and Evidence Against a Younger Dryas Impact Event '13-06-04, 05:00Evidence for deposition of 10 million tonnes of impact spherules across four continents 12,800 y ago '14-05-27, 05:00Chronological evidence fails to support claim of an isochronous widespread layer of cosmic impact indicators dated to 12,800 years ago '16-01-01, 05:00Petroglyph Discovery Suggests Clovis Culture Witnessed Cosmic Event '17-03-09, 05:00Widespread platinum anomaly documented at the Younger Dryas onset in North American sedimentary sequences '17-03-16, 05:00Decoding Göbekli Tepe with Archaeoastronomy: what does the fox say? '17-04-01, 05:00A model for the geomorphology of the Carolina Bays