Over the last few months, Google has been slowly building up a library of narrated Google Earth tours highlighting the impact of climate change. When the library was launched in September there were five tours. Today, there are twelve tours available for your viewing. Each of these tours is available for download and is available for viewing online. Embedded below is Saving North American Wildlife narrated by noted American mountaineer and author Rick Ridgeway.
Here are some related items that may be of interest to you:
Endangered Places Multimedia Maps
A Crash Course in Wind Energy
Exploring Alternative Energy Sources