2019 Ozone Hole is the smallest on record since discovery: NASA

NASA has revealed that the Ozone Hole over Antarctica is the smallest on record so far in 2019 since its discovery in 1982. Abnormally warm temperatures in upper atmosphere dramatically limited ozone depletion in September and October this year, satellite measurements revealed. "It's not a sign that atmospheric ozone is suddenly on a fast track to recovery", a scientist said.