The U.K.'s new 'Bio-Bus' carries 40 people and is powered by biomethane, produced by human and food waste.
Algae, that sludge you find in lakes and dirty swimming pools, is set to revolutionize how we power our lives! And we're not talking science fiction: This is science fact! Trace lists four ways algae is totally awesome!
Calculating how long global supply will hold out is trickier than it seems.
The Senate has voted in bipartisan favor of allowing the DOD to use biofuels, even if they cost more than conventional fuels.