Air conditioning our buildings and vehicles emits almost half a billion metric tons of carbon dioxide per year. Today, most households in the US use air conditioning, but that wasn’t the case just a few decades ago. What percentage of Americans had air conditioning in 1960?
Answer: A. 12%
Before air conditioning became widely used, homes were designed to keep occupants cool with features like high ceilings, ceiling fans, shade trees, and front porches. For suggestions on how to use less energy in the hot summer months, visit our Keeping Cool and Green tips.