Janet Larsen

Janet Larsen is the director of research for the Earth Policy Institute.

U.S. bike-sharing fleet more than doubles in 2013

The opening of the San Francisco Bay Area bikeshare brings the combined fleet of shared bikes in the United States above 18,000.

Bike sharing goes global

More than 500 cities in 49 countries now boast bikeshares. It's the fastest-growing mode of transport in history.