Which of the following countries had higher emissions of the greenhouse gas carbon dioxide, per capita, in 2008 than the other two?
Understanding the changes caused by the volcanic eruption will help researchers predict how the oceans will respond to certain levels of the greenhouse gas carbon dioxide, Fraile-Nuez said.
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Clearing land to plant food for biofuel releases the greenhouse gas carbon dioxide (CO2) through ploughing and can involve deforestation, which reduces the "carbon sinks" - the trees that absorb CO2.
Government scientists said Tuesday that 2012 was among the top ten warmest on record globally and continues a trend of rising temperatures due to increasing emissions of the greenhouse gas carbon dioxide.
Scientists presume that carbon sinks can slow the effects of global warming by trapping the main greenhouse gas, carbon dioxide.
Gas is a hydrocarbon, albeit the cleanest, so burning gas releases carbon dioxide into the atmosphere.
On top of that, a lot of methane (a far more potent greenhouse gas than carbon dioxide) emerges when all this food rots.
Greenhouse gas (carbon) emission for these vehicles also must fall by 34 percent from the 2016 levels by 2025, according to the California Air Resources Board.
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The advantage of utilizing waste is that it would otherwise be converted into methane, which is over 20 times as effective a greenhouse gas as carbon dioxide.
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The scrubbed alkaline clay would then be combined with treated flue gas, which is a carbon-rich gas that is normally released into the atmosphere during the manufacturing process.
Sir David King, Tony Blair's chief scientist, recently argued that one further generation of nuclear power stations is needed (in Britain at least) to buy time, in order to keep down emissions of carbon dioxide, the chief greenhouse gas, while new carbon-free non-nuclear technologies are developed.
Natural gas also cuts carbon dioxide emissions if you are worried about global warming by 44%.
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Gas taxes or carbon prices intended to alter behavior only work by causing financial pain to force the demand response.
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So, a hydrogen fuel-cell car even running ... on hydrogen derived from natural gas cuts that carbon emission by 60%.
No, it's not the answer to everything: Gas still emits carbon.
Many industrialized nations are trying to use less coal, oil and natural gas to lower carbon dioxide levels, which is warming the atmosphere and changing the Earth's climate.
It turns out that under an old provision of the Clean Air Act, power plants do have to tell the government about their releases of one greenhouse gas carbon dioxide.
For important pollutants monitored by the EPA, natural gas power cuts carbon monoxide emissions by 81%, nitrogen oxide emissions by 80%, sulfur dioxide emissions by 99%, mercury emissions by 100%, and particulates by 99%.
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When anticipated supply is sufficiently high, gas undercuts coal as the fuel of choice for electrical generation, which results in reduced carbon dioxide emissions, as natural gas produces only about 50% to 70% of the carbon dioxide per unit output (depending upon your metric) that coal does.
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.
While natural gas is a fossil fuel that emits carbon dioxide, tapping into the gas hydrates assessed in the study is not expected to affect global warming, said Brenda Pierce, coordinator for the USGS Energy Resources Program.
The ability to use domestic, clean, affordable natural gas combined with significant amounts of carbon to produce syngas for use in a gas-to-liquids plant offers extraordinary advantages over the current system.
Most studies to date suggest that shale-gas wells may lead to slightly higher carbon-dioxide emissions than conventional-gas ones because more wells are needed and fracking requires lots of power from diesel motors.
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That's just 10% what the plant emits, but Jones argues Skyonic should get credit for avoiding 220, 000 tons of carbon dioxide because it is creating products, like hydrogen, that would otherwise come from natural gas and release lots of carbon dioxide.
The Bush administration says Kyoto's mandatory limits on greenhouse gas emissions, notably carbon dioxide, would cripple the economy.
Natural gas contains only one carbon and four hydrogen atoms per molecule, making it the cleanest of fossil fuels.
Yeast is then added, converting sugar into alcohol and carbon dioxide gas.
Nematodes and bacteria capture and store carbon that otherwise contributes to global warming when allowed to overload the atmosphere in the form of carbon dioxide gas.
Engineers have built a contraption of water heater size that strips hydrogen out of natural gas while burning the carbon to provide heat for the home.
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