Staff blog

Additional NOx emissions from gliders under the Pruitt proposal would be 13 times what the impact of the Volkswagen fraud in the U.S. would have been had it gone undetected.
The summary of a "study" that the glider industry used to support its claim that EPA was wrong about how dirty gliders are is fingernails-on-a-chalkboard aggravating.
Tesla isn’t the only company betting big on long-haul electric trucks. Some of the others are betting on hydrogen, some on catenary systems. But don't look yet for an odds-on favorite.
Bombardier's new aircraft is mired in trade disputes, and that's creating some uncertainty over Delta Air Lines' order for 75 CS100 planes. But if Delta keeps its eye on the fuel savings it will reap—and remembers that the clean-sheet design CSeries is going to easily meet the ICAO CO2 standard—it will buy those aircraft, and more.
Sales of battery electric buses are surging, yet a complete technology transition won't happen overnight. Meanwhile, tightening emission standards on conventionally powered buses would have immediate benefits for air quality in many of the world's fastest growing megacities.
Indonesian drivers probably don’t realize they are paying more at the pump because of their country’s biodiesel mandate, which sets ambitious targets for the blending of biodiesel in diesel fuel. Indonesia’s biodiesel mandate is scheduled to increase to 30% in 2020, and as total transport fuel consumption is expected to grow steadily, this means the total amount of biodiesel required, and the total additional fuel costs to consumers, will ramp up quickly.