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One of the more promising sources of biofuels in recent years has been algae. While there are a number of small scale tests along with some larger scale commercialization projects, the UK's Carbon Trust wants to accelerate the process. The Trust has launched an Algae Biodiesel Challenge with goal of making algae-sourced liquid fuels commercially viable by 2020. The first phase of the £30 million project will focus on research and development including finding the best strains of algae, yie

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Along with Autoblog lensman Drew Phillips, we did the last leg of the Audi Mileage Marathon in Car #5: an Audi Q7 fitted with a 3.0-liter TDI. Our route lasted four days and took us from Las Vegas to Mammoth Lakes, CA, to Monterey for the final ALMS race at Laguna Seca, and then to Los Angeles. Unlike almost every other group there, we weren't trying to set any mileage records, we wanted to s

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In order for electric vehicles to make any actual impact on greenhouse gas emissions, a great deal of progress will need to be made on renewable sources of power generation. Wind power generation has been expanding rapidly, and solar is growing in some areas. Another source with huge potential is geothermal. If the natural heat energy held within the planet can be tapped, it could be almost limitless. That's easier said than done in most places but there are some areas where it could be very pra