Last week, we pointed to the teary-eyed speech by the well-known venture capitalist John Doerr, arguing for ways to stop global warming.

Now here’s his famous former parter, Vinod Khosla, who left Kleiner Perkins two years ago to invest aggressively in alternative energy, speaking on biofuels.

http://video.google.com/googleplayer.swf?docId=-570288889128950913&hl=en

This is worth watching. He is introduced by Larry Page, co-founder of Google, which Kleiner Perkins backed when it was a tiny company. Page explains that was a skeptic about biofuel until he was converted several months ago by Khosla and Richard Branson. Branson burns $1 billion of fuel a year, and feels bad about it, and sees biofuels as a good alternative, Page explains. It’s a long video: 1hr 8min.

For RSS readers, a link is here.

Mark Wendman has posted the related powerpoint.

In separate, but related: Acumentrics Corporation, a Westwood, Mass. company, has built a solid-oxide fuel cell company that runs on pretty much anything: natural gas, propane, ethanol, diesel, biogas, and biodiesel. It consumes half as much fuel as a comparable small-engine generator, per kW, and produces half as much CO2 while doing so. We haven’t looked into this company yet, but are relying on a story by Treehugger.