What is the ozone layer and what does it do?

LEVEL: Intermediate

To find a good, basic, defintion of the ozone layer we started with one of our favourite kid-friendly search sites: Factmonster. Just type ozone layer in the search box (top right hand corner of the home page) and you'll get a list of results from dictionaries, encyclopedias and online articles.

There's a good introduction to the depletion of the ozone layer with diagrams and links, at Science by Slim. Or try our own Ministry of Environment website with information on the ozone layer.