Seven New Gases Deal Damage to Ozone Layer
Despite a global phase-out of CFCs such as Freon, newly detected gases threaten the ozone layer's recovery.
Nov 26, 2014 6:00 AMNov 12, 2019 5:57 AM
On the left, ozone layer over Antarctica in March 1986. On the right, the same view in March 2014. Bluer areas on the maps indicate less ozone; greener areas more. | Molecule, Tim Evans/Science Source; Ozone images, NASA Ozone Watch; Illustration, Dan Bishop/Discover
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