Clean Air

Climate & Energy

Energy companies, seeing a greener future, are losing their faith in coal

Utility executives may finally be realizing that coal's days are numbered, a new survey suggests. Already!

Cities

City-dwellers’ allergies are so bad because they don’t have enough bacteria

This allergy season has been terrible. It seems like everyone I know has been running around with leaky eyes, even those of us who aren’t typically pollen-sensitive. Granted, there was an unusual amount of tree sperm in the air this year, but it seemed strange that everybody — really, everybody! — was afflicted. But a new study by Finnish researchers explains everything: The reason we’re all so sick is that we live in the city. According to this study, published in Proceedings of the National Academy of Sciences and based on research done in Finland, people who live in cities …

Biofuel

Modern-day DeLorean? Airplane runs on trash

One man’s trash is another man’s airplane fuel. Adventure-seeker Andy Pag aims to obtain funding and become the first person to fly a trash-fueled plane from one end of the U.K. to the other. His aircraft, a microlight plane, will be powered by gasoline made from un-recyclable plastics like bags and packaging. The fuel is made by a British company using Fischer–Tropsch synthesis–a process of making synthetic fuel that dates back to before WWII. Pag says the fuel is worth highlighting because it produces limited CO2, and reduces the volume of plastics that otherwise would go to landfills.