The world has already faced a major global climate challenge: the hole in the ozone layer, discovered in 1985. Find out what ozone is, why it's important, and how the ozone hole is being repaired.
- The ozone layer protects the planet by preventing most of the Sun's harmful ultraviolet rays from reaching the Earth.
- There are links between ozone depletion and global warming.
- CFCs are man-made substances that attack the ozone layer.
- CFCs have been banned in many countries so the ozone layer can slowly recover.