New York Times: As Asia Keeps Cool, Scientists Worry About the Ozone Layer

As Asia Keeps Cool, Scientists Worry About the Ozone Layer
By KEITH BRADSHER

MUMBAI, India — Until recently, it looked like the depleted ozone layer protecting the earth from harmful solar rays was on its way to being healed.

But thanks in part to an explosion of demand for air-conditioners in hot places like India and southern China — mostly relying on refrigerants already banned in Europe and in the process of being phased out in the United States — the ozone layer is proving very hard to repair.

Four months ago, scientists discovered that the “hole” created by the world’s use of ozone-depleting gases — in aerosol spray cans, aging refrigerators and old air-conditioners — had expanded again, stretching once more to the record size of 2001.

An unusually cold Antarctic winter, rather than the rise in the use of refrigerants, may have caused the sudden expansion, which covered an area larger than North America.

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