I recently stumbled across an excellent source for spreadsheets and graphics on energy and climate issues, the Environmental Data Center.  Unlike many sites of this nature, the resource seems to be regularly updated, providing access to some really good materials for Power Point presentations.

Related posts:

1. Call for Contributions: New Teaching Resource
2. CDM/JI Pipeline
3. Global Carbon Data, hot off the press
4. New Resources from Columbia Center for Climate Change Law
5. Virtual Environmental Law Guest Speakers Program