If you drive a diesel vehicle in the…

If you drive a diesel vehicle in the Bay Area, you may have noticed something a little different at your Propel Fuels station. For the first time, Propel has tarted selling a biological blend partially made from algae. That's right. A photosynthetic microorganism was turned into fuel without having to die, be buried in sediment and cooked by eons of geologic processes into petroleum. Instead, the company Solazyme simply grows its algae in the bark, on a sugar diet. Starved of light, the algae digest sugar and produce oil, which the company harvests. It's all part of an ongoing effect to make low-carbon fuels to replace diesel and gasoline. The idea is simple: the algae or other plants suck up CO2 when they grow, the same CO2 that is released when the fuel made from the algae is burned. So there's no net addition of the greenhouse gas to the atmosphere. Solazyme is hardly alone. Companies like Kior and Ineos are using chemical and biological managers respectively to turn wood into fuel. And experimental algae farms are springing up in San Diego and the deserts of New Mexico. The fuel of the future might not need epochs worth of fossilized sunshine, fulfilling some of the promise of idealized biofuels.