urban smog

  By Charles Pekow   Can simply adding an electric motor to a human-powered bicycle significantly reduce urban smog, traffic congestion and energy consumption — and even help curb climate change? Yes, but many bumps in the road must be overcome to get there. Today’s electric bicycles come in a range of two-wheeled e-bikes and three-wheeled e-trikes, varieties to meet consumer and business needs, with many millions already sold. The […]