In 1990, environmental activists organized what may be the largest act of civil disobedience for wilderness protection ever when authorities in northern California planned to chop down redwoods in an old-growth forest.
The months-long protest became known as “Redwood Summer,” and during it, activists physically blocked the paths of bulldozers and chained themselves to the trees to prevent them from being cut down.
Video: Protests to Save the Redwoods
The Redwood Summer ultimately saved many of the trees, and some of them still stand today, marked with blue paint, a symbol of that summer threat.
Learn more about California’s redwoods and their history in Explorer: Climbing Redwood Giants, Tuesday May 4 at 10P et/pt.