Massive impact killed megafauna and pushed humans into agriculture…

Massive impact killed megafauna and pushed humans into agriculture

Scientists have discovered new evidence that an extraplanetary body came down over Canada around 12,900 years ago, possibly trigging the death of the giant animals then roaming the North American continent and starting a cooling spell that helped drive mankind towards agriculture and civilization.…

Read more http://go.theregister.com/feed/www.theregister.co.uk/2013/09/03/canadian_comet_impact_fingered_for_triggering_younger_dryas_climate_shift/