Biofuels worsen global warming, according to two studies published in Science last week. Current US biofuel policies would double carbon emissions over the gasoline alternative. More details: ScienceExpress fulltext pdf of study #1, powerpoint summary of study #1, abstract of study #2, summary of both, policy recommendations pdf (via: 1, 2). [more inside]
posted by salvia on Feb 10, 2008 - 45 comments

In the U.S., motorists do not pay their way. The US government spends more on highways and other auto-related expenses than it receives from auto-related taxes, unlike almost every country in Europe. In a recent report [pdf], Mark Delucchi calculates automobile-related costs and revenues in three different ways and concludes the subsidy is around 20-70 cents per gallon or $24-105 billion in 2002. But what are automobile-related costs, you ask? [more inside]
posted by salvia on Oct 2, 2007 - 99 comments