Greenwire

Federal prosecutors may face challenges in bringing criminal charges against Volkswagen AG over its role in an emissions testing scandal because of exemptions in the Clean Air Act.

Nebraska landowners will likely keep pursuing litigation against a 2012 state law aimed at facilitating development of the Keystone XL oil pipeline from Canada.

Green groups and animal rights advocates are challenging Wyoming laws they contend "stifle freedom of speech and make citizen science illegal."

The U.S. District Court for the District of Columbia yesterday ruled in favor of U.S. EPA's decision to withdraw a 2012 rule to collect pollution data from large livestock operations, marking a blow for environmental groups that have long pushed for more accountability on agriculture's impact on waterways.

The National Oceanography Centre and World Wildlife Fund are using a pair of robots to help understand why so many marine animals are near a biodiversity hot spot in the Celtic Sea.

A vocal crowd of wildlife advocates criticized the New Mexico Game Commission yesterday as it denied an appeal aiming to release additional Mexican gray wolves into the Gila National Forest.

A new Fish and Wildlife Service management plan for bull trout goes into effect today, but conservationists said it doesn't do nearly enough to save the threatened Western fish.

A Native American tribe is trying to halt or delay the planned expansion of an underground gold mine in northwestern Nevada.

California's main water hub may be unfixable, but policymakers can't afford to stop trying to make things right, according to a government-sponsored report that was released yesterday.

A conservation group has filed a federal lawsuit challenging the Forest Service's approval this year of a gravel mining project near a ranch where Theodore Roosevelt once lived -- a site that is often called the "cradle of conservation" and the "Walden Pond of the West."

The chief of a top environmental group floated a compromise deal today that would lift the ban on crude oil exports in exchange for conservation measures and support for renewable energy production.

Arizona Rep. Matt Salmon (R) will not launch a primary challenge against Sen. John McCain (R), turning aside conservative Republicans who had urged the House lawmaker to take on the state's senior senator.

Less than 24 hours after Republican Rep. Ed Whitfield announced his retirement, a battle for the GOP nomination in his western Kentucky district is taking shape, with two contenders already in the race.

House Republicans next week will hold their caucus's leadership elections.

Freight and commuter railroads would get another three years to implement the automated safety system known as positive train control under a bipartisan bill introduced today by leaders of the House Transportation and Infrastructure Committee.

Reps. Don Beyer (D-Va.) and Rob Wittman (R-Va.) have introduced legislation that would ensure back pay for federal employees in the event of a government shutdown.

The Senate approved legislation this morning to keep the federal government funded through Dec. 11, just hours before a potential shutdown.

North Carolina Sen. Richard Burr plans to introduce a bill today that would temporarily reauthorize an expiring land-buying program, according to other Republican lawmakers.

A top political official overseeing the Army Corps of Engineers today offered a full-throated defense of her work on the controversial Waters of the U.S. regulation despite concerns raised by her own technical and legal experts.

Republicans on the House Energy and Commerce Committee today defeated a slew of Democratic proposals for revising a comprehensive energy package as bipartisan relations continued to fizzle along with the bill's chances.

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