"Two environmental organizations are suing [Maryland] Gov. Larry Hogan for blocking proposed clean air regulations on his first day in office. The Sierra Club and Chesapeake Physicians for Social Responsibility argue that the governor lacked the authority to pull back the rules aimed at reducing nitrogen oxides that are key ingredients in ozone."

"A lawyer for the defunct railroad at the center of the Lac-Megantic train derailment said Canadian Pacific Railway Ltd. is acting deplorably and offensively by attempting to shut down proceedings to distribute over $430 million to victims and creditors of the 2013 tragedy."

A bill slashing Environmental Protection Agency (EPA) funding and blocking several of its new regulations is scheduled to pass through the House Appropriations Committee."

"A California appeals court ruled this week that the U.S. Environmental Protection Agency has until the end of this month to decide whether or not to ban a widely used pesticide linked to a number of health problems."

"U.S. environmental regulators are expected within days to propose rules to make trucks more fuel efficient, and trucking industry executives and lobbyists familiar with the process said the rules will probably call for boosting fuel efficiency by 2027 nearly 40 percent from 2010 levels."

"The Obama administration said on Wednesday that it would take the first step toward regulating greenhouse gas emissions from airplanes, but it acknowledged it would most likely take years before stringent standards are enacted."

"The hard-line anti-whaling group Sea Shepherd Conservation Society said it has agreed to pay $2.55 million in damages to Japan’s Institute of Cetacean Research over its continued obstruction of whaling vessels despite an injunction."

"The Ontario government has unveiled North America’s first agricultural restrictions on a widely used class of pesticides blamed for the decline in bees and other pollinators."