Gases used to pump cold air are more potent than carbon dioxide
Air-conditioners dominate the facade of this building in Mumbai, India. Kuni Takahashi for The New York Times
In the ramshackle apartment blocks and sooty concrete homes that line the dusty roads of urban India, there is a new status symbol on proud display. An air-conditioner has become a sign of middle-class status in developing nations, a must-have dowry item.
It is cheaper than a car, and arguably more life-changing in steamy regions, where cooling can make it easier for a child to study or a worker to sleep. Read more
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