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The U.S. Department of Energy announced today that it will be funneling $67 million into 10 projects working on capturing the carbon dioxide produced by coal-fired power plants. Over the next three years, these projects will be developing ways to make current carbon capture techniques work with existing power plants.

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A running mantra through the climate debate is that global warming is global indeed. Now, however, a scientist has found that localized "CO2 domes" could increase urban smog and other air pollution problems.

In a study published in Environmental Science & Technology, Stanford University professor Mark Jacobson estimated that the effect could cause the premature deaths of 50 to 100 people a year in California and 300 to 1,000 for the continental United States. By comparison, anywhere from 50,000 to 100,000 people a year die in air pollution-related deaths.

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Levels of the main greenhouse gas in the atmosphere have risen to new highs in 2010 despite an economic slowdown in many nations that braked industrial output, data showed Monday.

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If someone other than Richard Branson had announced that he was waging war on the carbon dioxide molecule, it would probably have seemed a bit presumptuous. But we're talking about billionaire Sir Richard Branson, CEO of 360 companies including one that produced the first manned commercial spacecraft. If he's looking into it, it means he sees both a great challenge and a great opportunity.

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"UCLA chemists report creating a synthetic "gene" that could capture heat-trapping carbon dioxide emissions, which contribute to global warming, rising sea levels and the increased acidity of oceans"

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Nuclear energy is worth pursuing, wind and solar are good but have limitations, and the government is putting minuscule amounts of money into energy R&D dollars.

So says software tycoon turned philanthropist Bill Gates, who launched his Gates Notes Web site on Wednesday to share his big-picture ideas on big topics. High on his list is energy and environment, an area where he's already taken lots of notes.

In a series of podcasts, Gates sketches out what technologies and policies are likely to lead to the goal of reducing carbon dioxide emissions to zero.

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Last December world leaders met in Copenhagen to add more hot air to the climate debate. That is because although the impacts humanity would like to avoid—fire, flood and drought, for starters—are pretty clear, the right strategy to halt global warming is not. Despite decades of effort, scientists do not know what “number”—in terms of temperature or concentrations of greenhouse gases in the atmosphere—constitutes a danger.

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With cement production accounting for as much as 5 percent of global emissions of carbon dioxide — and the potential for expanded carbon caps looming — Cemex, one of the world’s largest producers of building materials, is angling to bring down its carbon dioxide emissions and perhaps wind up with some credits it can sell.

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"A study of the accumulation of carbon dioxide in the world’s oceans from 1765 to the present shows that as humanity pumps more CO2 into the atmosphere, the capacity of the world’s oceans to continue absorbing carbon appears to be decreasing."

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This page shows the current ppm of CO2 in the atmosphere.

The calculated figure uses estimates of the level of carbon dioxide (CO2 - the main greenhouse gas) based on actual measurements taken monthly a worldwide network of stations and collated by the Earth Systems Research Laboratory (ESRL) in Boulder, Colorado. The record of CO2 concentrations available from ESRL stretches back over 50 years.

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"In order to meet the British commitments to cut carbon dioxide emissions, ”a step change in the pace of reduction is needed”, a government advisory group says in a new report"

From 2003 to 2007, British CO2 reductions averaged 0.6 percent a year. This needs to increase to two to three percent a year to meet the government's carbon budgets, the British Committee on Climate Change (CCC) says in a new report Monday.

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The World Bank is spending billions of pounds subsidising new coal-fired power stations in developing countries despite claiming that burning fossil fuels exposes the poor to catastrophic climate change. The bank, which has a goal of reducing poverty and is funded by Britain and other developed countries, calls on all nations in a report today to “act differently on climate change”.

It says that the world must reduce its dependence on fossil fuels, but it is funding several giant coal-burning plants that will each emit millions of tonnes of carbon dioxide a year for the next 40 to 50 years.

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Scientists have long warned that climate change is not a linear process: global patterns can chug along looking quite normal for long periods of time even as we continue to pump increasing amounts of carbon dioxide into the atmosphere and then … bam, a tipping point is reached, pushing us into a new “normal.”

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Australia has overtaken the United States as the country that produces more carbon dioxide per person than any other, the British risk assessment company Maplecroft Ltd said Friday. Canada, the Netherlands and Saudi Arabia rounded out Maplecroft's list of the top five per-capita emitters of greenhouse gases from fossil fuels.

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Carbon dioxide will soon be declared a dangerous pollutant - a move that could help propel slow-moving climate-change legislation on Capitol Hill, the head of the Environmental Protection Agency said Monday.

EPA Administrator Lisa Jackson told reporters that a formal "endangerment finding," which would trigger federal regulations on greenhouse gas emissions, probably would "happen in the next months."

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The concentration of carbon dioxide in the atmosphere has reached a record high, according to the latest figures released by an internationally regarded measuring station in the Arctic.Levels of the gas at the Zeppelin research station on Svalbard, northern Norway, last week peaked at over 397 parts per million (ppm), an increase of more than 2.5ppm on 2008. They have since begun to reduce and today stand at 393.7ppm. Prior to the industrial revolution, CO2 levels were around 280ppm.

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In a landmark finding for America and humanity, the EPA “issued a proposed finding Friday that greenhouse gases contribute to air pollution that may endanger public health or welfare.” The ruling sounds the death knell for new dirty coal plants and should apply some pressure on Congress to pass climate legislation.

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Britain's latest coal-fired power station should not be built, according to Lord Stern of Brentford, the economist who led the Government's review into the financial cost of climate change. Lord Stern called on the Government to halt the planning process and said that the new coal-fired power station proposed for Kingsnorth in Kent cannot be justified until the technology is developed to capture and store its huge carbon dioxide emissions.

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Interactive maps that detail carbon dioxide emissions from fossil fuel combustion are now available on the popular Google Earth platform. The maps, funded by NASA and the U.S. Department of Energy through the joint North American Carbon Program, can display fossil fuel emissions by the hour, geographic region, and fuel type.

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NASA's first spacecraft dedicated to studying atmospheric carbon dioxide is in final preparations for a Feb. 23 launch from Vandenberg Air Force Base in California. Carbon dioxide is the leading human-produced greenhouse gas driving changes in Earth's climate.

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