More, bigger wildfires burning western US over last 30 years

Wildfires across the western United States have been getting bigger and more frequent over the last 30 years. The total area these fires burned increased at a rate of nearly 90,000 acres a year -- an area the size of Las Vegas, according to the study. Individually, the largest wildfires grew at a rate of 350 acres a year, the new research says.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/q...