The vital ozone layer has continued to deplete in recent years over the densely populated mid-latitudes and tropics, while it is recovering at the poles.

• Evidence for a continuous decline in lower stratospheric ozone offsetting ozone layer recovery https://www.atmos-chem-phys.net/18/1379/2018/
• Ozone loss may have caused mass extinction https://climatenewsnetwork.net/ozone-loss-may-have-caused-mass-extinction
• Ozone Pollution Maps Show Spikes Amid Broad Declines https://eos.org/articles/ozone-pollution-maps-show-spikes-amid-broad-declines
• UV Dosage Levels in Summer: Increased Risk of Ozone Loss from Convectively Injected Water Vapor https://science.sciencemag.org/content/337/6096/835
• Tropospheric Ozone https://www.ccacoalition.org/en/slcps/tropospheric-ozone

Credits

• Narrator: David Attenborough
• Interview: SWR
• Video: UNEP https://www.youtube.com/watch?v=OINKJNWtSiE and https://www.youtube.com/watch?v=WNGH1cILTPE
• Video: Out of This World (1944) https://archive.org/details/out_of_this_world
• Video: Ozone Hairspray Commercial https://archive.org/details/OzonHairspra
• Sound: EpicStockMedia.com
• Teaser image: Photo by Avi Richards on Unsplash https://unsplash.com/photos/Z3ownETsdNQ