http://www.sciencedaily.com/releases/2011/07/110727131407.htm
http://www.reuters.com/article/2011/07/29/us-tundra-fire-study-idUSTRE76S5VY20110729?feedType=RSS&feedName=environmentNews&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+reuters%2Fenvironment+%28News+%2F+US+%2F+Environment%29