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PBS News Hour
Earth’s ozone layer continues to recover, scientists report
In one of the great environmental success stories of our time, scientists say that a 35-year-old agreement has resulted in the steady and promising recovery of the Earth's ozone layer, a critical protective shield that blocks harmful ultraviolet radiation from the sun. Dr. Paul Newman, chief scientist for Earth sciences at NASA's Goddard Space Flight Center, joins William Brangham to discuss.
