NBC and the National Science Foundation have created free, short videos explaining the science behind many of the winter Olympic events. The language is probably accessible to high-intermediate ELL’s, especially because they have transcripts that you can view at the same time.
I’m adding the link to The Best Sites To Learn About The Vancouver Winter Olympics.
These videos are part of NBC’s extradordinary iCue site, which has had accessible videos and games on English, government and U.S. History for quite awhile, and is on several of my “The Best…” lists because of it.
In addition, though, I also see that they have a relatively new section on Environmental Science. This new addition ensures that iCue will definitely be on my 2010 list for Best Science Sites.