Scientists have a new perpetrator in the scenario of mass extinctions. Could bacteria be at fault? Read the article.

http://www.sciencedaily.com/releases/2014/03/140331153608.htm?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+sciencedaily%2Ftop_news%2Ftop_science+%28ScienceDaily%3A+Top+Science+News%29&utm_content=FaceBook

If you don't care for reality, just wait a while; another will be along shortly. --A Rose