Preserving the ozone layer

The ozone layer is one of things we probably can't do without. It blocks large amounts of ultraviolet radiation, which is responsible for sunburn and, if exposure is high enough, skin cancers. We've all heard for many years that the ozone layer has big "holes" in it at the poles (which is more like an extreme reduction in the concentration, but the idea's the same) as well as a general depletion of levels in the atmosphere.

Recent press reports would indicate that while the ozone layer is recovering, it may not be doing so as fast as we originally thought it might. Indeed, some skeptics question whether there was ever a problem in the first place. Arguments aside, living in Australia I'm a prime ozone depletion sufferer, so I'm inclined to side with the green and unwashed on this one, which is why in support of the United Nations International Day for the Preservation of the Ozone Layer (September 16) I bring you this:



In 2006, Al Gore spoke at the annual Technology, Entertainment and Design conference. It's worth watching, and at about 17 minutes it won't take much of your time.

Thank you.


Edit: If you don't want to (or can't) stream the video, it's also available in mp4 format at http://www.ted.com/tedtalks/.