Make a Comment • Email Link • Send Letter to Editor IPFS News Link • Science, Medicine and Technology Meteorite option Eliminated 12-10-2009 • arclein There is a black mat layer across North America which is correlated to the Younger Dryas climatic shift seen in Greenland ice cores dated at 13 thousand years ago by radio carbon," explains Paquay. Watch Streaming Broadcast Live: LRN.fm Watch live shows and archives TV Live Chat Telegram Share this page with your friends on your favorite social network: