In the summer of 1910, an unimaginable wildfire devoured more than three million acres across the Northern Rockies, confronting the fledgling US Forest Service with a catastrophe that would define the agency and the nation’s fire policy for the rest of the 20th century and beyond. Inspired by the best-selling book by Timothy Egan, The Big Burn provides a cautionary tale of heroism and sacrifice, arrogance and greed, hubris and, ultimately, humility in the face of nature’s frightening power.

Watch it on American Experience, tonight at 9pm on WGBH WORLD. More