Truth or Consequences Rather than reducing pollution, ethanol could make it worse, according to researcher Mark Jacobson of Stanford University. Reporting in Environmental Science & Technology, Jacobson found that ethanol-burning cars emit fewer carcinogens such as benzene and butadiene, but they give off 20 times as much acetaldehyde as conventional fuels. Acetaldehyde reacts with sunlight to form ozone, a main ingredient of smog. “There are so many people barking pretty loud about biofuels,” Jacobson told New Scientist. “They’ve been pushing these things before the science is done.”
Think we’ll see this in the mainstream media? Doubtful.