they secrete oil, which we could turn into biofuels. they also absorb co2. we're hoping to supplement the fuels that we use in our vehicles, and to do this at a large enough scale to someday help meet the wor's energy demands. >> shepard: what's more dangerous, heroin, crack cocaine, or alcohol? it's definitely the booze accord fog a new report out of the united kingdom. researchers in great britain evaluated those stub stance and others including marijuana, methamphetamines and ecstasy and ranked them how destructive they are to society as a whole. alcohol on top because it's so widely used and has devastating consequences for the drinkers and those around them. the study online medical journal lance set. other, the planet. it appears the rent is too damn high on planet blago and perhaps to help pay the bills, our favorite exgovernor is hitting the airways as a pitch man for what else but nuts?