The time when heavy appliances dominated home energy use seems almost as remote as the era of gaslights and streetcars. Today our homes’ electric outlets have never been more sought after — computers, printers, modems, set-top boxes, and endless chargers all clamor for power — leaving refrigerators and washers as small players in the utility bill we receive.

Researchers from George Mason University asked nearly 500 scientists about climate change and the results were unequivocal: 84% agreed that human-induced global warming is occurring; and only 5% disagreed that human activity is a significant contributor. Yet when the Americans are asked what the most important problem facing society is, the answer is rarely climate change.