4.2K views · 249 reactions | Australian Antarctic expeditioners are living in the twilight zone after the last sunset on the icy continent for weeks. Yesterday Davis research station farewelled the winter sun as it dipped below the horizon, not to rise again until 10 July. Read more at www.antarctica.gov.au/news/2019/icy-twilight-zone | Australian Antarctic Program | Facebook

Substantial Antarctic Ozone Hole in 2021 The 2021 Antarctic ozone hole reached its maximum area on October 7 and ranks as the 13th largest since 1979. Scientists from NASA and NOAA reported that this year’s ozone hole developed similarly to last year’s: A colder than usual Southern Hemisphere winter led to a deep and larger-than-average ozone hole that will likely persist into November or December. “This is a large ozone hole because of the colder-than-average 2021 stratospheric conditions, and