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NASA scientists find meteoric evidence of Mars water resevoir

December 19, 2014 2:26 pm | News | Comments

NASA and an international team of planetary scientists have found evidence in meteorites on Earth that indicates Mars has a distinct and global reservoir of water or ice near its surface.            

Carbon-trapping “sponges” can cut greenhouse gases

December 16, 2014 8:56 am | by Anne Ju, Cornell Univ. | News | Comments

In the fight against global warming, carbon capture is gaining momentum, but standard methods...

Past global warming similar to today’s, but in two pulses

December 15, 2014 1:54 pm | by Jim Erickson, University of Michigan | News | Comments

The rate at which carbon emissions warmed Earth's climate almost 56 million years ago resembles...

Image: Clouds fill Grand Canyon

December 12, 2014 10:27 am | by Associated Press | News | Comments

A rare weather phenomenon at the Grand Canyon had...

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Warmer Pacific Ocean could release millions of tons of seafloor methane

December 9, 2014 5:29 pm | News | Comments

Off the West Coast of the United States, methane gas is trapped in frozen layers below the seafloor. New research from the University of Washington shows that water at intermediate depths is warming enough to cause these carbon deposits to melt, releasing methane into the sediments and surrounding water.

Buckyballs enhance carbon capture

December 4, 2014 7:37 am | by Mike Williams, Rice Univ. | News | Comments

Rice Univ. scientists have discovered an environmentally friendly carbon-capture method that could be equally adept at drawing carbon dioxide emissions from industrial flue gases and natural gas wells. The Rice laboratory of chemist Andrew Barron revealed in a proof-of-concept study that amine-rich compounds are highly effective at capturing the greenhouse gas when combined with carbon-60 molecules.

Small volcanoes make a dent in global warming

December 3, 2014 11:04 am | by David L. Chandler, MIT News Office | News | Comments

New research shows that relatively small volcanic eruptions can increase aerosol particles in the atmosphere, temporarily mitigating the global warming caused by greenhouse gases. The impact of such smaller eruptions has been underestimated in climate models, the researchers say, and helps to account for a discrepancy between those models and the actual temperatures observed over the last 15 years.

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CO2 warming effects felt just a decade after emitted

December 3, 2014 10:54 am | by Institute of Physics | News | Comments

It takes just 10 years for a single emission of carbon dioxide to have its maximum warming effects on the Earth. This is according to researchers at the Carnegie Institute for Science who have dispelled a common misconception that the main warming effects from a carbon dioxide emission will not be felt for several decades.

Atmospheric carbon dioxide used for energy storage products

December 2, 2014 4:28 pm | by David Stauth, Oregon State Univ. | News | Comments

Chemists and engineers at Oregon State Univ. have discovered a fascinating new way to take some of the atmospheric carbon dioxide that’s causing the greenhouse effect and use it to make an advanced, high-value material for use in energy storage products. This innovation in nanotechnology won’t soak up enough carbon to solve global warming, but it will provide a low-cost way to make nanoporous graphene for use in supercapacitors.

Trace Analysis of Carbon Dioxide in High-Purity Hydrofluorocarbon

November 25, 2014 4:15 pm | by Zhuangzhi “Max” Wang, Clifford M. Taylor, Shimadzu Scientific Instruments, Columbia, Md. | Articles | Comments

Fluorocarbon, a generic term for organic compounds with carbon-fluorine (C-F) bonding, is a chemical material used as a refrigerant in refrigerators and freezers and air conditioners in cars, buses, other vehicles and buildings. It’s also used as a cleaning agent for electronic components and precision parts.

Model evaluates where bioenergy crops grow best

November 24, 2014 7:59 am | by Liz Ahlberg, Physical Sciences Editor, Univ. of Illinois, Urbana-Champaign | News | Comments

Farmers interested in bioenergy crops now have a resource to help them determine which kind of bioenergy crop would grow best in their regions and what kind of harvest to expect. Researchers at the Univ. of Illinois have published a study identifying yield zones for three major bioenergy crops.

What agricultural ecosystems on steroids are doing to the air

November 21, 2014 9:21 am | by Nicole Casal Moore, Univ. of Michigan | News | Comments

In a study that identifies a new, "direct fingerprint" of human activity on Earth, scientists have found that agricultural crops play a big role in seasonal swings of carbon dioxide in the atmosphere. The new findings from Boston Univ., the Univ. of Michigan and other institutions reveal a nuance in the carbon cycle that could help scientists understand and predict how Earth's vegetation will react as the globe warms.

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World not close to avoiding dangerous warming

November 19, 2014 11:00 am | by Seth Borenstein - AP Science Writer - Associated Press | News | Comments

The world still isn't close to preventing what leaders call a dangerous level of man-made warming, a new United Nations report says. That's despite some nations' recent pledges to cut back on carbon dioxide emissions. The report looks at the gap between what countries promise to do about carbon pollution and what scientists say needs to be done to prevent temperatures rising another two degrees.

Research quantifies health benefits of reducing greenhouse gas emissions

November 19, 2014 8:31 am | by Allan Chen, Lawrence Berkeley National Laboratory | News | Comments

Reducing greenhouse gas (GHG) emissions, which result from the burning of fossil fuels, also reduces the incidence of health problems from particulate matter (PM) in these emissions. A team of scientists has calculated that the economic benefit of reduced health impacts from GHG reduction strategies in the U.S. range between $6 and $14 billion annually in 2020, depending on how the reductions are accomplished.

A new portrait of carbon dioxide

November 18, 2014 9:36 am | by Patrick Lynch, NASA's Goddard Space Flight Center | Videos | Comments

An ultra-high-resolution NASA computer model has given scientists a stunning new look at how carbon dioxide in the atmosphere travels around the globe. Plumes of carbon dioxide in the simulation swirl and shift as winds disperse the greenhouse gas away from its sources. The simulation also illustrates differences in carbon dioxide levels in the northern and southern hemispheres.

As temperatures rise, soil will relinquish less carbon to atmosphere

November 18, 2014 8:26 am | by Dan Krotz, Lawrence Berkeley National Laboratory | News | Comments

Here’s another reason to pay close attention to microbes: Current climate models probably overestimate the amount of carbon that will be released from soil into the atmosphere as global temperatures rise, according to research from Lawrence Berkeley National Laboratory. The findings are from a new computer model that explores the feedbacks between soil carbon and climate change.

New method for methanol processing could reduce carbon dioxide emissions

November 17, 2014 8:33 am | by Matthew Chin, Univ. of California, Los Angeles | News | Comments

Researchers at the Univ. of California, Los Angeles Henry Samueli School of Engineering and Applied Science have developed a more efficient way to turn methanol into useful chemicals, such as liquid fuels, and that would also reduce carbon dioxide emissions. Methanol, which is a product of natural gas, is well-known as a common “feedstock” chemical.

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Porous molecules bind greenhouse gases

November 14, 2014 7:54 am | by Lisa Merkl, Univ. of Houston | News | Comments

A team of Univ. of Houston chemistry researchers have developed a molecule that assembles spontaneously into a lightweight structure with microscopic pores capable of binding large quantities of several potent greenhouse gases. While carbon dioxide presents the biggest problem, several other compounds are hundreds or thousands of times more potent in their greenhouse effect per unit of mass.

The missing piece of the climate puzzle

November 11, 2014 7:49 am | by Genevieve Wanucha | Program in Atmospheres Oceans and Climate | MIT | News | Comments

In classrooms and everyday conversation, explanations of global warming hinge on the greenhouse gas effect. In short, climate depends on the balance between two different kinds of radiation: The Earth absorbs incoming visible light from the sun, called “shortwave radiation,” and emits infrared light, or “longwave radiation,” into space.

Thirdhand smoke: Toxic airborne pollutants linger long after the smoke clears

November 4, 2014 2:47 pm | by Julie Chao, Lawrence Berkeley National Laboratory | News | Comments

Ever walked into a hotel room and smelled old cigarette smoke? While the last smoker may have left the room hours or even days ago, the lingering odors are thanks to thirdhand smoke. Scientists at Lawrence Berkeley National Laboratory, who have made important findings on the dangers of thirdhand smoke and how it adsorbs strongly onto indoor surfaces, have published a new study assessing the health effects of thirdhand smoke constituents.

Lack of oxygen delayed the appearance of animals on Earth

October 31, 2014 8:44 am | by Jim Shelton, Yale Univ. | News | Comments

Scientists have long speculated as to why animal species didn’t flourish sooner, once sufficient oxygen covered the Earth’s surface. Animals began to prosper at the end of the Proterozoic period, about 800 million years ago. But what about the billion-year stretch before that, when most researchers think there also was plenty of oxygen? Well, it seems the air wasn’t so great then, after all.

NIST “combs” atmosphere to measure greenhouse gases

October 30, 2014 8:36 am | by Laura Ost, NIST | News | Comments

By remotely "combing" the atmosphere with a custom laser-based instrument, researchers from NIST, in collaboration with researchers from the National Oceanic and Atmospheric Administration (NOAA), have developed a new technique that can accurately measure—over a sizeable distance—amounts of several of the major "greenhouse" gases implicated in climate change.

How we get the nitrogen we need

October 28, 2014 8:42 am | by Kimm Fesenmaier, Caltech | News | Comments

Nitrogen is an essential component of all living systems, playing important roles in everything from proteins and nucleic acids to vitamins. It is the most abundant element in Earth's atmosphere and is literally all around us, but in its gaseous state, N2, it is inert and useless to most organisms.

NASA identifies ice cloud above cruising altitude on Titan

October 27, 2014 9:34 am | News | Comments

Scientists have identified an unexpected high-altitude methane ice cloud on Saturn's moon Titan that is similar to exotic clouds found far above Earth's poles. Now, eight years after spotting this mysterious bit of atmospheric fluff, NASA's Cassini spacecraft, researchers have determined that it contains methane ice, which produces a much denser cloud than the ethane ice previously identified there.

Scientists discover carbonate rocks are unrecognized methane sink

October 17, 2014 9:25 am | by Mark Floyd, Oregon State Univ. | News | Comments

Since the first undersea methane seep was discovered 30 years ago, scientists have meticulously analyzed and measured how microbes in the seafloor sediments consume the greenhouse gas methane as part of understanding how the Earth works. The sediment-based microbes form an important methane “sink,” preventing much of the chemical from reaching the atmosphere and contributing to greenhouse gas accumulation.

Getting to know super-Earths

October 16, 2014 10:56 am | by Kimm Fesenmaier, Caltech | News | Comments

The findings of NASA’s planet-hunting Kepler spacecraft suggest that the most common exoplanets are those that are just a bit larger than Earth but smaller than Neptune. These so-called super-Earths, which do not exist in our own solar system, have attracted the attention of astronomers, who have been trying to determine the composition of the closest of these planets. However, an unexpected barrier is blocking their progress.

Satellite sees hot spot of methane in U.S. Southwest

October 10, 2014 9:14 am | by Seth Borenstein, AP Science Writer | News | Comments

A surprising hot spot of the potent global-warming gas methane hovers over part of the southwestern U.S., according to satellite data. That result hints that the U.S. Environmental Protection Agency and other agencies considerably underestimate leaks of methane, also called natural gas. While methane isn't the most plentiful heat-trapping gas, scientists worry about its increasing amounts and have had difficulties tracking emissions.

Atmospheric chemistry hinges on better physics model

October 6, 2014 11:44 am | News | Comments

An improved theoretical model of photoabsorption of nitrous oxide, developed by scientists in Malaysia, could shed light on the atmospheric chemistry of ozone depletion. The new theoretical work unveils, through improvements in established calculation approaches, the actual dynamic of stratospheric catalytic ozone destruction.

Argonne researchers create more accurate model for greenhouse gases from peatlands

October 6, 2014 8:50 am | by Louise Lerner, Argonne National Laboratory | News | Comments

Scientists at the U.S. Department of Energy’s Argonne National Laboratory have created a new model to more accurately describe the greenhouse gases likely to be released from Arctic peatlands as they warm. Their findings, based on modeling how oxygen filters through soil, suggest that previous models probably underestimated methane emissions and overrepresented carbon dioxide emissions from these regions.

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