While the plunge was more abrupt with Patriot, comparable coal credits have also seen sharp declines amid historically low natural gas prices and a regulatory environment that is pushing a coal-to-gas transition.
FORBES: Coal credits pressured by regulatory issues, coal-to-gas transitions
To the extent that companies are testing environmental markets by moving ahead with tradable reductions of greenhouse-gas emissions, the environment profits.
Such a stimulus would even give us a cleaner environment, as gas is replacing dirtier coal and is most easily integrated with renewable technologies like wind and solar.
FORBES: Fiscal Cliff? What We Really Need Is Another Stimulus
They found that natural gas is actually worse for the environment than coal.
The group says forcing water and chemicals deep into shale deposits to extract gas threatens drinking water and the environment.
Oh yeah, and they guzzel gas and are bad for the environment.
If developing countries rely only on traditional energy technologies, we will lose the battle to limit greenhouse gas emissions and assure a livable environment in the coming century.
As a result, major auto makers, OEMs, fuel providers and infrastructure players are creating an environment that makes natural gas transportation a viable option for both businesses and consumers.
FORBES: Guest Column: The Shift To Natural Gas Vehicles Is Happening
Blue Star Steel saves money buying scrap steel, and the environment is spared additional greenhouse gas emissions from a foundry.
In any case, destructive farming practices in exporting countries sometimes do more damage to the environment than burning oil or gas.
The company offers deepwater and harsh environment drilling, oil and gas drilling management, and drilling engineering and project management services, as well as explores, develops, and produces oil and gas resources.
Among those that do, the definition varies: 55% define sustainability as the management of issues related to the environment (for example, greenhouse gas emissions, energy efficiency, waste management, green-product development, and water conservation).
If you care about the environment, if you care about gas prices, if you care about where our soldiers and navy may serve next, if you want the U.S. to remain strong and dominant in the world, look to the north this summer.
Half were exposed to the gas at room temperature and half in a warm environment to keep their body temperatures from dropping.
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The un-burned, leaked gas is 72 times more potent than carbon dioxide -- a greenhouse gas -- making it more damaging to the environment, Krupp said.
At the tail end of the global economic boom, when concerns about the environment were widely voiced, large "gas-guzzling" sports utility vehicles (SUVs) became objects of loathing and ridicule.
Chris Wick, from the Environment Agency, said landfill sites generated gas when waste broke down but 2012 had been exceptionally wet and it was believed heavy rain had increased the gas produced.
Mark Brownstein, an associate vice president with the Environmental Defense Fund, said many oil and gas companies claim to be leaders in protecting the environment, and "this can be one opportunity for them to demonstrate that leadership" by submitting to an audit.
"It's only in the last 10 years that Chadians have become reliant on charcoal, they can soon learn to adapt to something else, " said the environment minister, keenly expounding the virtues of gas.
But there are some actions the President and his administration could take in a second term that would make us less dependent on imported oil from hostile nations, increase efficiency, increase the economic activity generated by the oil and natural gas industry, and do it all without harming the environment.
More general areas included are what percentage of the population voted and how many trust Parliament, the state of the economy and the environment - the latter measured in part using greenhouse gas emissions and air pollutants.
Obama also wants to expand natural gas production, as long as it doesn't damage the environment.
Proposals to build the UK's largest underground gas storage facility in Lancashire would be "destructive" to the environment, campaigners have said.
BBC: Wyre Estuary gas storage plans by Halite Energy opposed
The 2011 Nissan LEAF, which uses no gas, was also rated best-in-class for the environment based on emitting zero greenhouse gases or other traditional tailpipe emissions.
ENGADGET: Nissan Leaf blessed with 99MPG 'equivalent' sticker, roundtable arguments ensue
Cities are particularly keen to tackle landfill gas, says Mr Blumenfeld of San Francisco's Department of Environment, because it is one of the few sources of emissions over which they have jurisdiction.
Environment Agency Wales said between one and two tonnes of ammonia gas were believed to have leaked.
Globally, the use of depleting oil and gas fields for purposes of CO2 sequestration can be very helpful to the environment.
The new environment secretary, Owen Paterson, is a fan of shale gas.
Pipelines and gas wells will inevitably leak or rupture, risking lives and fouling the environment where people live and further polluting the air we breathe and the water we drink.
FORBES: LNG Exports Would Have Minimal Impact on U.S. Prices: Deloitte
This week, Ecology and Environment was listed as a member of the Independent Oil and Gas Association of New York in a letter sent to Gov. Andrew Cuomo urging him to lift the ban.
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