CNNThe largest-ever Arctic ozone hole developed this spring. Now, scientists say it's closed.Apr 27, 2020Allen KimBy Allen Kimmore_vert
Livescience.comNorth Pole's largest-ever ozone hole finally closesApr 27, 2020Brandon SpecktorBy Brandon Specktormore_vert
CBS NewsThe largest Arctic ozone hole ever recorded is now closedApr 30, 2020Sophie LewisBy Sophie Lewismore_vert
Daily MailThe largest ozone hole ever seen above the Arctic has closed again just weeks after being announcedApr 28, 2020more_vert