Air conditioners are a major source of greenhouse gases. On Project Drawdown’s 2017 list of over 100 opportunities to reduce human-caused global warming, cleaner tech for refrigeration and ...

Building more efficient AC and refrigerators could prevent the equivalent of eight years of global emissions over the next four decades. If we want to stay on track with the Paris Climate Agreement ...

IN A WARMING world it helps to stay cool. But doing so also threatens the planet. Most air conditioners use refrigerant gases called hydrofluorocarbons (HFCs). Though these do not deplete Earth’s ...

As record-breaking heat waves baked Californians last month, the collective strain of millions of air conditioners forced the state’s grid operators to plunge hundreds of thousands of households into ...

WHAT is the single most effective way to reduce greenhouse-gas emissions? Go vegetarian? Replant the Amazon? Cycle to work? None of the above. The answer is: make air-conditioners radically better. On ...