I gave a keynote talk at the annual NREL Forum in Denver this week on “The cleantech roller coaster ride, and also why people should still be excited about cleantech.” It was a lot of fun and I got some great feedback on it. The Joe Biden GIFS got a thumbs up (as did the Giants pin). If you want to check it out, I put it up on SlideShare (embedded below) and made some notes in it about some of the trends I talked about. Update: The GIFs don’t work in Slideshare, so I just did pics of the GIFs. Use your imagination for the animated version.