NASA | A Story of Ozone: The Earth’s Natural Sunscreen

The video discusses the importance of the ozone layer in protecting Earth from harmful UV radiation. It highlights the discovery of ozone-depleting substances like CFCs and the subsequent formation of the Antarctic ozone hole. The Montreal Protocol, an international agreement to phase out CFCs, is credited with preventing further ozone depletion. Current trends show a slow recovery of the ozone layer, but challenges remain with HFCs, which are potent greenhouse gases. The video emphasizes the need for continued atmospheric monitoring and potential regulation of HFCs to address climate change.

How did the levels of chlorine in the atmosphere change after the Montreal Protocol was signed?

What are the potential consequences of a world with no action taken against ozone depletion?

What are HFCs and how do they relate to the issue of ozone depletion?

Discuss the role of satellites in monitoring ozone levels.