Critical Mass bicycle rides started in 1992 in California and have since spread around the world. Hundreds of people ride together in a group on roads, forcing cars to go at bicycle speed. They often chant, “Critical Mass, don't use gas!”
On May 17 there will be a Critical Mass bike ride in Brattleboro. The ride starts at 6 p.m. at the town common. The goal is to get politicians to deal with climate change, which the world's leading scientists say is a major threat to earth's ability to support human life. Details about the ride are at: