Beijing's Bike Rescue.

• Position: THE BIG PICTURE - Bike sharing in China - Brief article

No, this isn't the world's biggest bicycle graveyard. These bikes--thousands of them, owned by a bike sharing company-were recently pulled off the streets of Beijing, China's capital, for repairs. China's in the midst of a bike-sharing craze. It already has the world's largest fleet of shareable bikes, topping more than 1 million (the U.S. has the third-largest, about 40,000), and bike sharing companies are making it easier than ever for China's 1.3 billion people to get on two wheels. Riders unlock bikes using an app and rent them for about 1 yuan ($0.15) per hour; with no docking stations like in the U.S., riders drop them anywhere. But on China's congested...