Two Wheels Good. By Jody Rosen. Crown; 416 pages; $28.99. To be published in Britain by Bodley Head in August; £25 In 1896 one of Joseph Pulitzer’s most influential newspapers, the World, reported a ...

When Denver’s Gates Corp. in 2008 debuted a belt-drive system to replace century-old chains on bikes, the company promised a “game changer” for the cycling industry. But the chainless revolution – ...