Remember the Internet? Renewable energy and green technology will be a lot bigger than that, say Silicon Valley's venture capitalists.

For a fascinating rundown about how the venture capitalists are falling over themselves to save the planet and make huge profits, check out this piece in Ode Magazine.

According to San Francisco-based green investment consultancy, CleanTech Group, some $US1.1 billion was invested in clean energy technology in 2007, up 94% from the year before.