On this day in 1431, Joan of Arc, condemned as a heretic, was burned at the stake in Rouen, France. In 1539, Hernando De Soto landed in Florida, and in 1883, a rumor that the recently opened Brooklyn Bridge was in danger of collapsing triggered a stampede that led to the trampling deaths of 12 people. On this day in 2002, a solemn, wordless ceremony marked the end of the cleanup at Ground Zero in New York, 8 1/2 months after the Sept. 11 terrorist attacks, and nine climbers fell into a crevasse near the summit of Oregon's Mount Hood; three died.