(This article by Felicity Carus first appeared on Clean Energy Connection and has been edited for length. Any opinions expressed are her own.)

What venture capitalists really think and what they say aren’t always the same thing.

Steve Jurvetson, from Draper Fisher Jurvetson, last week gave his overview of disruptive innovation in clean tech at the Always On Going Green conference in San Francisco.

The man who famously invested $300,000 for a 30 percent stake in Hotmail and made $250 million for his VC firm when Microsoft bought the company two years later says there is an “explosion of possibilities” of synthetic genetics in clean tech.

In August, one of Jurvetson’s portfolio companies, Genomatica, filed an S-1 form with the U.S. Securities and Exchange Commission. The company uses computerized biotechnology modeling to design high-volume chemicals from renewable sources such as cellulosic biomass.