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Can we turn unwanted carbon dioxide into electricity?

December 12, 2013 5:54 pm | by Pam Frost Gorder, Ohio State Univ. | News | Comments

Researchers are developing a new kind of geothermal power plant that will lock away unwanted carbon dioxide underground and use it as a tool to boost electric power generation by at least 10 times compared to existing geothermal energy approaches. The technology to implement this design already exists in different industries, so the researchers are optimistic that their new approach could expand the use of geothermal energy in the U.S.

Study: Ocean crust lavas could store many centuries of industrial carbon dioxide

December 4, 2013 10:54 am | News | Comments

At high pressures and low temperatures, such as those in the deep oceans, carbon dioxide occurs as a liquid that is denser than seawater. Researchers in England have identified regions beneath the oceans where the igneous rocks of the upper ocean crust could safely store very large volumes of carbon dioxide.

Methane-munching microorganisms meddle with metal

November 11, 2013 2:46 pm | News | Comments

Methane hydrates are a potential energy source, but they are also a potential source of global warming. A pair of cooperating microbes on the ocean floor "eats" this methane in a unique way, and a new study provides insights into their surprising nutritional requirements. Learning how these methane-munching organisms exist in extreme environments could provide clues about how the deep-sea environment might change in a warming world.

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Updating building energy codes: How much can your state save?

November 7, 2013 7:00 am | News | Comments

How much in energy and cost savings would your state realize if it updated its commercial building energy codes? You can find out in a new online publication from the National Institute of Standards and Technology (NIST). The state-by-state reports were the product of a new building energy efficiency analysis tool developed by NIST.

Clean Air Act has improved water quality in the Chesapeake Bay watershed

November 7, 2013 7:00 am | News | Comments

A new study shows that the reduction of pollution emissions from power plants in the mid-Atlantic is making an impact on the quality of the water that ends up in the Chesapeake Bay. The study confirms a decreased amount of emissions of nitrogen oxide from coal-fired power plants.

Without plants, Earth would cook under billions of tons of additional carbon

October 16, 2013 2:19 pm | by Morgan Kelly, Princeton Univ. | News | Comments

Enhanced growth of Earth's leafy greens during the 20th century has significantly slowed the planet's transition to being red-hot, according to the first study to specify the extent to which plants have prevented climate change since pre-industrial times. Researchers have found that land ecosystems have kept the planet cooler by absorbing billions of tons of carbon, especially during the past 60 years.

Study: Methane leaks from gas drilling not huge

September 17, 2013 1:02 pm | by Kevin Begos and Seth Borenstein, Associated Press | News | Comments

According to research published this week drilling and fracking for natural gas don't seem to spew immense amounts of the greenhouse gas methane into the air, as has been feared. The study, mostly funded by energy interests,  doesn't address other fracking concerns about potential air and water pollution, but does generally with government estimates.

Microgels in tiny polar ice algae important to ocean carbon budgets

September 12, 2013 8:04 am | by Peter Bondo Christensen and Christina Troelsen, Aarhus Univ. | News | Comments

Secretion of polysaccharides from the micro community living within the sea ice stick organism together and forms greater particles introducing a rapid transport of carbon to the seafloor. New research now makes it possible to forecast the importance for the global carbon budget of this transport.

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Artificial “lung” removes carbon dioxide from smokestack

September 9, 2013 10:42 am | News | Comments

The amazingly efficient lungs of birds and the swim bladders of fish have become the inspiration for a new filtering system to remove carbon dioxide from electric power station smokestacks before the main greenhouse gas can billow into the atmosphere and contribute to global climate change. A report on the new technology was presented Monday at the 246th National Meeting & Exposition of the American Chemical Society.

Scientists analyze the extent of ocean acidification

August 26, 2013 8:11 am | News | Comments

In a new study, biologists have compiled and analyzed all available data on the reaction of marine animals to ocean acidification. From this collection of 167 studies with data from more than 150 different species, they found that while the majority of animal species investigated are affected by ocean acidification, the respective impacts are specific and can vary widely from species to species.

Study determines rate of release for old permafrost carbon

August 21, 2013 1:10 pm | by Peter Rüegg, ETH Zurich | News | Comments

Using indicator molecules, a team of researchers working in Eurasia has for the first time assessed contributions of old carbon from permafrost soils to riverine carbon headed. They were also able to demonstrate that permafrost soils where the frozen areas are interspersed with gaps release more old carbon than those where the permafrost is uninterrupted.

Climate benefit for cutting soot, methane smaller than previous estimates

August 13, 2013 8:23 am | News | Comments

Cutting the amount of short-lived, climate-warming emissions such as soot and methane in our skies won't limit global warming as much as previous studies have suggested, a new analysis shows. The study also found a comprehensive climate policy (including methane) would produce more climate benefits by 2050 than if soot and methane were reduced alone.

Seasonal carbon dioxide range expanding

August 9, 2013 12:50 pm | News | Comments

A multi-year airborne survey of atmospheric chemistry has revealed that the range of seasonal carbon dioxide, which plants take up in spring and summer and release in fall and winter, is expanding as more is added to Earth's atmosphere. According to scientists who conducted the study, northern hemisphere land-based ecosystems are "taking deeper breaths.”

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New method predicts adsorption in carbon dioxide-scrubbing materials

August 9, 2013 8:28 am | News | Comments

Scientists would like to apply the same principles by which baking soda removes food odors from refrigerators or silica powder keeps moisture away from electronic devices to scrub carbon dioxide from the exhaust gases of fossil fuel power plants. Multivariate metal organic frameworks, or MTV-MOFs, are an excellent candidate. But until now, finding and synthesizing the best MTV-MOFs for this task has been a major challenge.

New knowledge about permafrost is improving climate models

July 29, 2013 2:04 pm | News | Comments

The rate at which carbon dioxide is released from permafrost is poorly documented, and is a crucial uncertainty in current climate models. New findings by environmental scientists at the Univ. of Copenhagen, Denmark, document that permafrost during thawing may result in a substantial release of carbon dioxide into the atmosphere and that the future water content in the soil is crucial to predict the effect of permafrost thawing.

Field test could lead to reducing carbon dioxide emissions worldwide

July 29, 2013 10:07 am | News | Comments

An injection of carbon dioxide has begun at a site in southeastern Washington to test deep geologic storage. Battelle researchers based at Pacific Northwest National Laboratory are placing 1,000 tons of the gas one-half mile underground to see if the greenhouse gas can be stored safely and permanently in ancient basalt flows.

Team creates first above-ground carbon density map for whole country

July 23, 2013 8:36 am | News | Comments

Researchers have for the first time mapped the above ground carbon density of an entire country in high fidelity. They integrated field data with satellite imagery and high-resolution airborne LiDAR data to map the vegetation and to quantify carbon stocks throughout the Republic of Panama. Carbon stocks are now reported locally in areas as small as a hectare (2.5 acres).

For Obama's climate plan, devil is in the details

July 15, 2013 10:24 pm | by Josh Lederman, Associated Press | News | Comments

Three weeks after giving an ambitious speech to outline his climate change proposal, President Obama begins the arduous task of executing it. His plan is a complicated mix of rulemaking and federal permitting that's tough to encapsulate in a neat sales pitch—and may be even tougher to put into action.

Big footprints: 21% of homes account for half of greenhouse gas emissions

June 26, 2013 12:16 pm | News | Comments

The energy people use to power their homes and to satisfy their mobility needs accounts for more than 70% of emissions of carbon dioxide, the main greenhouse gas involved in global climate change. Recent research suggests that energy conservation in a small number of households could go a long way to reducing greenhouse gas emissions.

Removing carbon from emissions

June 25, 2013 7:20 am | by David L. Chandler, MIT News Office | News | Comments

Many researchers are seeking ways to “scrub” carbon dioxide from the emissions of fossil-fuel power plants as a way of curbing the gas that is considered most responsible for global climate change. Now, researchers have developed a scrubbing system that requires no steam connection, can operate at lower temperatures and would essentially be a “plug-and-play” solution that could be added relatively easily to any existing power plant.

Power plant limits at center of president's climate plan

June 25, 2013 6:50 am | by Johs Lederman and Matthew Daly, Associated Press | News | Comments

In a speech Tuesday at Georgetown University, Barack Obama is expected to announce he's issuing a presidential memorandum to launch the first-ever federal regulations on carbon dioxide emitted by existing power plants, moving to curb the gases blamed for global warming despite adamant opposition from Republicans and some energy producers.

Global cooling as significant as global warming

June 18, 2013 10:30 am | News | Comments

A “cold snap” 116 million years ago triggered a similar marine ecosystem crisis to the ones witnessed in the past as a result of global warming, according to recently published research. The international study confirms the link between global cooling and a crash in the marine ecosystem during the mid-Cretaceous greenhouse period.

Underwater springs show how coral reefs respond to ocean acidification

June 17, 2013 7:06 pm | News | Comments

A recent study is the first to show that corals are not able to fully acclimate to low pH conditions in nature. The results are from a study of corals growing where underwater springs naturally lower the pH of seawater. The coral doesn’t die, but the acidity reduces the density of coral skeletons, making coral reefs more vulnerable to disruption and erosion.

Alternative-fuel cars are no carbon cure-all

June 12, 2013 8:31 am | News | Comments

Making cars more fuel-efficient is great for reducing greenhouse gas emissions, but rather than promoting sales of electric and other alternative-fuel vehicles, policymakers should turn their focus to cutting emissions in other energy sectors—from oil wells and power plants to farms and forests affected by biofuels production—says a Univ. of Michigan researcher.

Long-lasting ancient concrete had a small carbon footprint

June 4, 2013 12:55 pm | News | Comments

At the Advanced Light Source, scientists analyzed samples from a Roman breakwater that has been submerged in the Bay of Naples for over two millennia, revealing the secrets of crystal chemistry that allow Roman seawater concrete to resist chemical attack and wave action for centuries. The manufacture of extraordinarily durable Roman maritime concrete released much less carbon than most modern concrete does today.

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