Julia Butterfly Hill, the environmental activist who drew international attention when she perched for two years in a California giant redwood to keep it from being cut down, speaks tonight at the College of Charleston.

In 1997, at 24 years old, Hill was hoisted hundreds of feet in the air to the canopy of the 1,000-year-old tree in Humboldt County, Calif. She braved cramped space, fierce weather and hostile opposition, to save the tree from lumbering and call attention to old growth redwood.

She has gone on to a life of taking stands for environmental causes.

She speaks at 7 p.m. in Physicians Memorial Auditorium, 3 College Way, in a free event open to the public.