Humans Responsible for Most US Wildfires
Humans are responsible for 84 percent of all wildfires in the United States, a new study suggests. Writing in the Proceedings of the National Academy of Sciences, researchers from the University of Massachusetts Amherst say during 20 years, human-started fires have “tripled the length of the fire season and dominated an area seven times greater than that affected by lightning-caused fires.” The study looked at the years 1992 to 2012 and found that of the 1.5 million fires that were large enough to require fire fighting... Читать дальше...