Warm Air Helped Make 2017 Ozone Hole Smallest Since 1988 On November 6, 2017 By peanutgallerynhIn Environment,, Science and Stuff, Warm Air Helped Make 2017 Ozone Hole Smallest Since 1988 | NASA Share this: Share on X (Opens in new window) X Share on Reddit (Opens in new window) Reddit Share on Facebook (Opens in new window) Facebook Like Loading... Related