Ah, alternative fuels. Aren't they the best? It all started with a hybrid car, which led to plug-in hybrid electric vehicles (PHEVs), and now battery-electric vehicles (BEVs) are dominating the scene.

The 10-bus pilot is part of the agency's efforts to transition to a climate-friendly fleet. But it has attracted criticism from some environmentalists. Employees with SEPTA and other transit agencies ...

If we asked you to think of a device that converts a chemical reaction into electricity, you’d probably say we were thinking of a battery. That’s true, but there is another device that does this that ...