Arctic ozone levels in never-before-seen plunge

- The ozone layer has seen unprecedented damage in the Arctic this winter due to cold weather in the upper atmosphere. Full story:

http://www.bbc.co.uk/news/science-environment-12969167

* Developing ozone hole approaches Europe:

http://cristiannegureanu.blogspot.com/2011/03/developing-ozone-hole-approaches-europe.html