Armed with hatchets and knives, slave and educated minister Nat Turner and seven of his followers launched a violent rebellion in Southampton County, Virginia, on August 21, 1831.
Like most other pieces of cardiovascular exercise equipment, a recumbent bike can provide you with a good workout -- assuming you put a decent effort into it.
ReCycle Bikes. These bikes are handmade in Portland, Oregon, from recycled aluminum. The seats are made of renewable cork, and they use belts instead of chains because belts require less maintenance. Though it's not quite there yet, the company hopes to one day have the bikes made of entirely recycled materials.