"CDC review of seven studies involving over 8,000 children suggests a link between childhood leukemia and exposure to high levels of auto exhaust. Direct cause-effect needs more study, researchers say."

"Dark clouds of soot and gases spewed by tractors, bulldozers and backhoes are becoming a thing of the past under new federal standards that have forced cleaner diesel engines this year."

"Years of pushing for action by property owners along Lakes Michigan and Huron have finally prompted the federal government to explore an engineering fix to the low water plaguing the lakes for the past 15 years."

"Oh sure, the Tesla Model S may be the 'best car sold in America' per Consumer Reports, and it may be a Wall Street darling and perhaps the only electric vehicles for which demand exceeds supply. But that didn't stop regulators in New Jersey from ordering Tesla to shut down its stores by April 1 because the company doesn't use dealers like every other automaker."

"WASHINGTON — Rail tank cars being used to ship crude oil from North Dakota's Bakken region are an 'unacceptable public risk,' and even cars voluntarily upgraded by the industry may not be sufficient, a member of the National Transportation Safety Board said Wednesday."

"Federal regulators on Tuesday ordered shippers to properly test and classify crude oil from the productive Bakken region before loading it onto freight trains, a move meant to tighten regulatory standards after a spate of derailments and explosions that highlighted the hazards of carrying crude oil on rails."

"Dozens of freight trains roll through downtown Parkville each day, their blaring horns annoying to anyone with ears. But the chief of the Southern Platte Fire Protection District, Richard Carrizzo, has far more chilling concerns these days."

"If an oil train explosion on the scale of last year's deadly crash in Quebec roiled a U.S. town, would railroads have enough emergency personnel and equipment ready to respond? In most cases, transportation regulators don't know."

"A fire-ravaged ship loaded with hazardous chemicals has become a maritime football in the north Pacific, with Japan and South Korea unwilling to give it refuge even though they risk a wider environmental disaster if it sinks."

"WASHINGTON — The U.S. Department of Transportation collects relatively small civil penalties against the railroads it regulates, as concern grows over the safety of shipping large volumes of crude oil and ethanol in tank cars long known to be deficient, federal documents show."