Space and Earth Sciences News

Biofuel production in the US has met with fairly mixed success, as the cost and fossil fuel use of corn-based ethanol has severely cut into the benefits provided by avoiding the use of fossil fuels. It's been a somewhat different story in Brazil, which has embraced ethanol derived from sugarcane and seen more promising results. The government has set aggressive targets for both ethanol and biodiesel production, but a study that will be published in the Proceedings of the National Academies of Science later this week urges caution: unless the goals are met through an integrated agricultural strategy, they'll drive deforestation that will offset most of the benefits. The study looked at the expansion of the two crops that are expected to drive biofuels growth in Brazil: sugarcane for ethanol, and soy beans for biodiesel. To reach the country's 2020 goals, there will have to be a major increase in the production of both of those crops. Even assuming major increases in the efficiency of their production (the aut