Lake Sediments Cast More Doubt That a Comet Caused Ice Age Extinctions
Tuesday, August 4, 2009 - 15:56
in Paleontology & Archaeology
ALBUQUERQUE--After combing through layers of ancient lake sediments, paleoecologist Jacquelyn Gill of the University of Wisconsin–Madison says her team has found no evidence to support a controversial comet theory for an ice age extinction event. [More]