As forest fires become more common — in California, in particular — it has been easy to point to climate change and severe drought conditions as the main reasons. Researchers, though, say that the human element may play just as an important role to the troubling trend.
Back in the 1900s, the way to spot a forest fire was from a fire tower. The U.S. Forest Service erected thousands of towers throughout the country as part of a national fire lookout system. Each tower had room enough for a man or woman to stay and keep an