Bikes

A new study says New York City's bike-share program saved nearly 500 tons of emissions over four years.

Bikes and parts could cost 15% to 25% more — if there's even inventory to sell, that is.

They can be left anywhere, which riles wealthy communities. But that might make them surprisingly effective in underserved neighborhoods.

Fat bikes have increased in popularity recently all over the country, not just for riding in cold temperatures. They can be used like a standard mountain bike on all kinds of terrain.

Classes teach how to repair and maintain bicycles for those who can't yet drive.