One of the iconic European films of the 1990s, Emir Kusturica’s “Underground”, features a scene where a character pedals a stationary bicycle to produce electricity. The work that character did on the bike was enough to power a headlight. Is this really possible? And if so, would it be an efficient use of energy? The idea of using bicycles to generate electricity while you work out is far from new. With climate change concern on the rise, more and more people are looking for ways to make electricity generation less emission-intensive.…