| 30 July 2010

photo: jurveston via flickr Algae biofuels are probably the most touted future hope to replace large amounts of petroleum-based liquid fuels with a renewable source. However, a new study in Energy and Fuels shows that when you grow that algae in bioreactors made up of clear tubes, so much energy is required that the carbon footprint of the biofuel is o... Read the full story on TreeHugger