While the ozone hole over Antarctica typically grows in September and October, scientists observed the smallest ozone hole since they first began observing it in 1982, according to a joint release by NASA and NOAA.
원문출처 : https://www.cnn.com/2019/10/21/world/antarctic-ozone-hole-shrinks-scn-trnd/index.html
원문출처 : https://www.cnn.com/2019/10/21/world/antarctic-ozone-hole-shrinks-scn-trnd/index.html