particulate emisions from diesel

Diesel used to be cheaper than gas (petrol) in the U.S., but now it’s more expensive. Matthew L. Wald of the New York Times analyzes and explains why diesel’s price is rising in the article “So You Think Gas Costs A Lot?“. This and two other articles on diesel are discussed, and the advantages of high mpg turbodiesel cars are contrasted with some environmental concerns and the rising cost of diesel fuel.