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News articles on carbon dioxide

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Mongabay.com news articles on carbon dioxide in blog format. Updated regularly.

Carbon dioxide-eating enzyme could fight global warming

(08/09/2006) A new technology could help fight climate change by letting carbon-dioxide enzymes do the work. According to Mark Wendman of the UK-based Inquirer a Canadian firm has licensed production rights to an enzyme that scrubs carbon dioxide from smokestacks and other concentrated sources. The byproducts from the CO2 scrubbing process are carbonate and hydrogen gas, which could serve as a fuel source.


Sun, not carbon dioxide, primary driver of ice ages says new theory

(07/24/2006) A new theory says that carbon dioxide is only a secondary driver of ice ages. In a paper published online in the journal Climate of the Past, William Ruddiman, an environmental scientist with the University of Virginia, argues that "carbon dioxide is a driver of ice sheets only at the relatively small 23,000-year cycle, but not at the much larger ice-volume cycles at 41,000 years and approximately 100,000 years" according to a news release from the university.


Sea creatures may have role in global warming

(07/04/2006) Small sea creatures known as salps may have a role in global warming by locking up carbon in surface seas and sending it to the depths of the ocean. By prevening carbon from re-entering the atmosphere, these animals may have a small role in countering climate change resulting from increased levels of carbon dioxide in the atmosphere.


Future crop yields lower than expected under higher carbon dioxide levels

(06/29/2006) Open-air field trials involving five major food crops grown under carbon-dioxide levels projected for the future are yielding signifcantly less than those raised in earlier enclosed test conditions. Scientists at the University of Illinois at Urbana-Champaign warn that global food supplies could be at risk without changes in production strategies.


United States economy becomes more carbon efficient

(06/21/2006) The state of Nevada had the largest increase in carbon emissions between 1990 and 2001 according to mongabay.com's analysis of figures released by the Energy Information Administration. Carbon dioxide emissions climbed 47 percent during the period, while the state's economy grew by 85 percent and its population increased by 73 percent. The figures show that Nevada, like the rest of the United States, is becoming getting more out of its carbon dioxide emissions than it did in 1990. Overall the United States was about 20 percent more carbon dioxide efficient in 2001 than in 1990, with each metric ton of carbon dioxide generating from $1,614 to 1,724 worth of gross domestic product.


Warming could cause rain forests to release more carbon dioxide

(06/20/2006) Extra amounts of key nutrients in tropical rain forest soils cause them to release more carbon dioxide into the atmosphere, according to research conducted by scientists at the University of Colorado (CU) - Boulder. Results of the research, conducted by Cory Cleveland and CU scientist Alan Townsend, are published this week in the journal Proceedings of the National Academy of Sciences.


US has low-cost alternatives to oil; peak oil frenzy and human-induced climate change avoidable says Columbia University

(05/14/2006) Surging oil prices have fueled calls for the United States to develop new sources of affordable and secure domestic energy. While renewable energy -- especially biofuels, wind power, and solar technologies -- is an area of particular interest, researchers from the Earth Institute at Columbia University say that the U.S. already has relatively low-cost alternatives to imported oil, including coal, tar sands, and oil shale. These resources can be extracted and used at a lower cost to the environment than some might expect. In a report published in the most recent issue of Brookings Papers on Economic Activity, Klaus S. Lackner and Jeffrey D. Sachs argue that "coal alone could satisfy the country's energy needs of the twenty-first century." They say that "coal liquefaction, or the process of deriving liquid fuels from coal, is already being used in places and with expanded infrastructure could provide gasoline, diesel fuel and jet fuel at levels well below current prices." Further, Sachs and Lackner suggest that "environmental constraints such as increased carbon dioxide emissions arising from greater use of coal and other fossil fuels could be avoided for less than 1 percent of gross world product by 2050," a sum far less than others have estimated.


Carbon savings from biofuels quantified

(05/12/2006) A British fuels company has quantified carbon dioxide emission savings made through the sale of biofuels. Greenergy Fuels Ltd, which supplies biofuels retailed through supermarket forecourts, said it supplied 17.1 million liters of bioethanol and biodiesel, saving more than 40,000 tons of carbon dioxide emissions during the first quarter of 2006. The firm compared this savings to taking more than 50,000 average family cars off the road for three months.


China and India show rapid increase in global warming emissions

(05/10/2006) Carbon dioxide emissions continue to rise with a mix of old and new polluters, according to the Little Green Data Book 2006, launched today on the occasion of the Fourteenth Session of the United Nations Commission on Sustainable Development. An annual publication of the World Bank, according to this year?s edition, CO2 emissions worldwide have now topped 24 billion metric tons, an increase of 15 percent compared to the 1992 levels.


How Plants Respond to Elevated Carbon Dioxide

(05/02/2006) An important source of uncertainty in predictions about global warming is how plants will respond to increasing atmospheric carbon dioxide. Now biologists at the University of California, San Diego have made significant advances toward understanding the mechanism plants use to regulate their carbon dioxide intake. The researchers say that their findings provide important insights into the cellular and genetic mechanisms through which increasing carbon dioxide emissions will impact the world's vegetation.


Greenhouse gases hit record in 2005

(05/01/2006) Atmospheric levels of gases believed to be fueling global warming continued to climb in 2005 according to analysis released by the U.S. National Oceanic and Atmospheric Administration. The agency said its index of greenhouse gases -- the Annual Greenhouse Gas Index or AGGI -- showed an increase in carbon dioxide (CO2) and nitrous oxide but a leveling off of methane, and a decline in two chlorofluorocarbons (CFCs), gases that contribute to the hole in the ozone layer above Antarctica. NOAA reports that overall, the AGGI "shows a continuing, steady rise in the amount of heat-trapping gases in the atmosphere."


US Greenhouse gas emissions hit record in 2004

(04/19/2006) EPA findings quietly released on Monday following Easter. Figures released Monday show that US greenhouse gas emissions hit a record in 2004, surging 1.7 percent over 2003. The increase, equivalent to a rise of 115 million tons of carbon dioxide, was the largest annual increase since 2000. In total, the United States released the equivalent of nearly 6,300 million tons of carbon dioxide into the atmosphere. America is the world's largest polluter in terms of greenhouse gas emissions.


Plants may absorb less carbon dioxide than initially believed

(04/12/2006) The world's land plants will probably not be able to absorb as great a share of the rising atmospheric carbon dioxide as some models have predicted, according to a new study led by Peter B. Reich, professor in the department of forest resources at the University of Minnesota. The work showed that limitations on the availability of nitrogen, a necessary nutrient, will likely translate to limitations on the ability of plants to absorb extra carbon dioxide.


Report makes case for regulating carbon dioxide emissions

(04/05/2006) A new report evaluating air pollution trends at the nation's 100 largest electric power producers shows that emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) have fallen markedly in recent years, but carbon dioxide (CO2) emissions increased and will likely spike in coming years. The report comes amid increasing public concern and intensifying pressure for limits on heat-trapping emissions from U.S. power plants and rising investor concern about companies' long-term financial risk from climate change. In the absence of federal regulations, business uncertainty is growing as more U.S. states and regions move to enact their own limits on CO2 emissions from power plants. The U.S. government has opted for voluntary controls on carbon dioxide, but last year the U.S. Senate adopted a resolution calling for mandatory emission limits.


Record one-year increase in carbon dioxide levels

(03/13/2006) Atmospheric carbon dioxide levels jumped 2.6 parts per million (ppm) in 2005, one of the largest increases on record according to data from the National Oceanic and Atmospheric Administration (NOAA). Carbon dioxide levels now stand at 381 ppm, about 36 percent above pre-industrial levels.


Clean coal could fight climate change

(03/13/2006) A new chemical process for removing impurities from coal could lead to significant reductions in carbon dioxide emissions from coal-fired power stations say researchers sponsored by the Engineering and Physical Sciences Research Council, Britain's main agency for funding research in engineering and the physical sciences.


Climate change due to water vapor from cosmic explosion, not fossil fuels says new theory

(03/13/2006) A controversial new theory attributes climate change not to atmospheric carbon dioxide levels but water vapor. In an unpublished paper, Vladimir Shaidurov of the Russian Academy of Sciences argues that the apparent rise in average global temperature recorded by scientists over the past hundred years could be due to atmospheric changes resulting from the Tunguska Event, a massive explosion over Siberia on the June 30th, 1908 that is thought to have resulted from an asteroid or comet entering the earth's atmosphere and exploding


Slowing global warming may be less costly than initially thought

(03/09/2006) Preventing carbon dioxide levels from rising to potentially dangerous levels could cost less far less than originally projected--less 1 percent of gross world product as of 2050--but a major shift in the way energy is found, transformed, transported and used will be necessary to prevent a severe energy crisis within the next century, say researchers from the The Earth Institute.


U.S. greenhouse gas emissions increase 2 percent

(12/19/2005) U.S. greenhouse gas emissions increased by 2.0 percent in 2004, from 6,983.2 million metric tons carbon dioxide equivalent in 2003 to 7,122.1 metric tons in 2004, according to Emissions of Greenhouse Gases in the United States 2004, a report released today by the Energy Information Administration (EIA).


Deforestation causes 25% of greenhouse gas emissions

(12/10/2005) Yesterday the Food and Agriculture Organization of the United Nations (FAO) offered to provide forestry data and technical assistance to countries looking to mitigate greenhouse gas emissions through the reduction of forest loss.


Changes in forest cover could affect climate as much as greenhouse gases in some areas

(12/09/2005) Deforestation, the growth of forests, and other changes in land cover could produce local temperature changes comparable to those caused by greenhouse gases according to new simulations from the National Center for Atmospheric Research (NCAR).


Future forests may absorb more carbon dioxide than current forests

(12/08/2005) Forests of the future may grow faster and absorb more carbon in a carbon dioxide enriched environment according to a new study by researchers at the Department of Energy (DOE).


Arctic Inuit sue U.S. govt over global warming pollution

(12/08/2005) A group of people living in the Arctic have filed a lawsuit against the US government, claiming its climate change policies violate their human rights. The Inuit Circumpolar Conference (ICC) says that by failing to control emissions of greenhouse gases, the US is damaging the livelihoods those living in the Arctic. The group has filed a petition with the Inter-American Commission on Human Rights demanding that the US limit its emissions.


Mexico addressing greenhouse gas emissions despite no Kyoto obligation

(12/07/2005) Mexico, a country that has no emission reduction obligatons under the Kyoto Protocol, is acting on its own to assist companies in managing their greenhouse gas (GHG) emissions.


Elevated atmospheric CO2 increases soil carbon

(12/05/2005) An article in the current issue of Global Change Biology indicates that soils in temperate ecosystems might contribute more to partially offsetting the effects of rising atmospheric CO2 concentrations than earlier studies have suggested.


U.S. "exporting" carbon emissions to China says study

(12/01/2005) The growth of Chinese imports in the U.S. economy boosted the total emissions of carbon dioxide (a primary greenhouse gas) from the two countries by over 700 million metric tons between 1997 and 2003, according to a study published online in the journal Energy Policy. The analysis, prepared by two scientists at the National Center for Atmospheric Research, suggests that American emissions of carbon dioxide in 2003 would have been 6% higher if the United States had manufactured the products that it imported from China. Meanwhile, China's 2003 emissions would have been 14% lower had it not produced goods for the United States.


Crystal sponges can absorb carbon dioxide and fight global warming

(12/01/2005) Since the Industrial Revolution, levels of carbon dioxide---a major contributor to the greenhouse effect---have been on the rise, prompting scientists to search for ways of counteracting the trend. One of the main strategies is removing carbon dioxide (CO2) from the flue exhaust of power plants, using porous materials that take up the gas as it travels up the flue.


Atmospheric carbon dioxide levels closely correlated with global temperatures

(11/28/2005) Studying ice cores from Antarctica, scientists of the Alfred Wegener Institute for Polar and Marine Research extended the record of historic concentrations of carbon dioxide, methane and nitrous oxide in the atmosphere by 250,000 years. The team found a close correlation between atmospheric carbon dioxide levels and global temperatures. Over the past 650,000 years, low greenhouse gas concentrations have been associated with cooler conditions. The current concentration of atmospheric carbon dioxide, at 380 parts-per-million, is the highest level recorded over the past 650,000 years.


Average temperatures climbing faster than thought in North America

(11/27/2005) Tree rings and borehole drill samples have added to the evidence that average temperatures in North America have risen steadily in the past 150 years according to a new study by researchers at Oregon State University and the University of Utah. In their paper published in Journal of Geophysical Research, scientists found that average temperatures in the Northern Hemisphere increased about 1.5 degrees since the beginning of the industrial revolution when atmospheric carbon dioxide concentrations began to increase sharply.


Ocean levels rising twice as fast

(11/25/2005) Global ocean levels are rising twice as fast today as they were 150 years ago according to research presented in Science by a team of researchers. The Using core samples of sediments along the New Jersey coast, the scientists found that rates of sea level change have climbed significantly over the past 200 years, coinciding with the beginning of the industrial revolutions when carbon dioxide emissions began to dramatically increase. Carbon dioxide is the principal greenhouse gas believed to contribute to global warming.


Carbon dioxide at highest level in 650,000 years

(11/24/2005) Carbon dioxide levels are now 27 percent higher than at any point in the last 650,000 years, according to research into Antarctic ice cores published on Thursday in Science.


Five million tons of carbon dioxide successfully buried, DOE eyes Kyoto

(11/16/2005) Secretary Samuel W. Bodman today announced that the Department of Energy (DOE)-funded "Weyburn Project" successfully sequestered five million tons of carbon dioxide (CO2) into the Weyburn Oilfield in Saskatchewan, Canada, while doubling the field's oil recovery rate. If the methodology used in the Weyburn Project was successfully applied on a worldwide scale, one-third to one-half of CO2 emissions could be eliminated in the next 100 years and billions of barrels of oil could be recovered.


Sun's role in global warming may be underestimated says Duke researchers

(10/01/2005) The physicists said that their findings indicate that climate models of global warming need to be corrected for the effects of changes in solar activity. However, they emphasized that their findings do not argue against the basic theory that significant global warming is occurring because of carbon dioxide and other "greenhouse" gases.


Rising carbon dioxide levels could devastate marine food chain

(09/29/2005) Rising carbon dioxide in the atmosphere could make oceans to acidic for marine organisms producing protective shells according to research published in the journal Nature. Such a development could be catastrophic for the ocean's food chain and devastating for world fisheries.


Capturing and storing the carbon dioxide could be key in minimizing climate change

(09/26/2005) A new assessment report finalized here today by the Intergovernmental Panel on Climate Change (IPCC) concludes that capturing and storing the carbon dioxide (CO2) produced by power plants and factories before it enters the atmosphere could play a major role in minimizing climate change.


Hurricane Katrina damage just a dose of what's to come

(09/21/2005) The kind of devastation seen on the Gulf Coast from Hurricane Katrina may be a small taste of what is to come if emissions of the greenhouse gas carbon dioxide (CO2 ) are not diminished soon, warns Dr. Ken Caldeira of the Carnegie Institution's Department of Global Ecology in his opening remarks at the 7th International Carbon Dioxide Conference in Boulder, Colorado, September 26, 2005.


Global warming may have triggered worst mass extinction

(08/29/2005) A dramatic rise in carbon dioxide 250 million years ago may have caused global temperatures to soar and result in Earth's greatest mass extinction, according to a study published in the September issue of Geology. Global warming, which may have produced temperatures 10 to 30 degrees Celsius higher than today, would have had a significant impact both on oceans, where about 95% of lifeforms became extinct, and on land, where almost 75% of species died out.


Borneo's peat lands going up in smoke

(04/21/2005) The tropical rainforests of Kalimantan have long been threatened and increasingly endangered by deforestation and other invasive types of human activity. However, a lesser known ecosystem in the region that is literally coming under fire, is the tropical peat lands, particularly in the central area of the province of Indonesian Borneo



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