So-called "short-lived" gasses and black particle pollution from power plants in Asia and transport in the United States could have a greater influence than previously predicted on temperature changes in North America and elsewhere on Earth, the U.S. Nati
Company's renewable diesel earns certification as a fuel and gets tested on a Jeep Liberty with a diesel engine.
CleanFuel USA gets California Air Resources Board certification for its propane engine system designed for school buses and fleet trucks.
Take one 18th-century engineer and a diesel engine, and you have the 100-mile-per-gallon car.
Along with another batch of the bomb-sniffing robots, the Army orders high-performance radios to retrofit existing machines.