"Top seven alternative energies" from Stanford

The link begins: The US could replace all its cars and trucks with electric cars powered by wind turbines taking up less than 3 square kilometres – in theory, at least.

Mark Jacobson noted: "Some options that have been proposed are just downright awful. Ethanol-based biofuels will actually cause more harm to human health, wildlife, water supply, and land use than current fossil fuels."