Word has it that Hillary Clinton will be giving a keynote address at the Cleantech Venture Forum VIII in Washington, D.C., on October 25th. AOL founder Steve Case, who launched his own D.C.-based investment firm Revolution LLC in April, is also expected to attend the conference. Increasingly I'm hearing about enterpreneurs and VCs who made it big during the dot-com boom beginning to shift their attention to cleantech investments. Part of the allure is what many call the double bottom line -- that is, the financial and environmental opportunities of many emerging technologies and services.

It's the ultimate combination of making money and feeling good about it. I'm hoping to make it down to the Cleantech forum this month and report on some of the events, so stay tuned.