摘要：F or at least 200,000 years, humans have been adapting to the climate. We’ve migrated, tamed fre, and developed clothes, shelter, and agriculture. In the 20th century, adaptation took on a new twistwith the development of air conditioning, which made vastswaths of the developed world more habitable to humans. Andaccording to recent research by Barreca et al. (2016), it nowappears that air conditioning is a lifesaver. Te authors estimatethat residential AC saves about 20,000 lives a year in the UnitedStates alone, and it has the capacity to save far more aroundthe world.
