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Nasa Ozone Damage Videos by Popular

Ozone Hole Not Expected to Recover for Over 50 Years

12/17/13
Chemicals that are known to negatively effect the ozone layer have been banned, but according to estimates from NASA scientists, the hole ... tags: Environment_NewsGeoBeatsnasa_ozone_damagenasa_ozone_holenasa_ozone_hole_50_yearsnasa_ozone_hole_recovernasa_ozone_hole_research