"The average fuel economy of new US cars and trucks hit a record 24.1 miles per gallon (mpg) last year, according to the Environmental Protection Agency. Overall fuel economy for new cars and trucks has risen almost 5 mpg since 2004."

"Pennsylvania environmental regulators are pursuing a record $4.5 million fine against a gas driller over what they describe as a major case of pollution from a leaking waste pit."

"The League of Conservation Voters (LCV) has launched a grassroots operation to mobilize its members as volunteers in nine Senate races that they say are crucial to environmental progress."

"More than 80 organizations are asking the e-commerce company to follow the lead of Google and other tech giants and divorce itself from the American Legislative Exchange Council."

"The Environmental Protection Agency moved on Tuesday to increase the amount of data made available to the public on regulated chemicals."

"What ties America's second-biggest energy company, ConocoPhillips Co., to a small Houston-based shale driller, Halcón Resources Corp.? They had some of the worst carbon pollution rates among their peers in 2012."

"From Miami to Washington DC, towns and cities on America’s east coast could see triple the number of tidal floods by 2030 as sea levels rise, say researchers."

"A federal judge in Nebraska has dismissed a challenge to the Environmental Protection Agency’s (EPA) proposed carbon limits for new power plants."

"A majority of U.S. packaged foods labeled as 'natural' and tested by Consumer Reports actually contained a substantial level of genetically modified ingredients, according to a report issued Tuesday by the non-profit product testing group."

"Farmers from the biggest U.S. corn-growing states have sued Syngenta AG over sales of genetically modified corn seed not approved by China, joining global exporters in pursuing damages from the Swiss-based company."