Tag: "methane" at biology news

7,000 feet under the Sea: LSU scientists take geology to great depths

... areas on the sea floor that leak large amounts of methane gas and/or crude oil. The Gulf of Mexico is unique because it contains both biogenic methane and thermogenic methane gases. Biogenic methane is formed by bacterial activity in sediment. This ...

November GEOLOGY and GSA TODAY highlights

...tes the role of high concentrations of atmospheric methane and polar clouds in explaining the high-latitude f...ars, may have been facilitated by high atmospheric methane concentrations and the presence of polar stratospheric clouds. Have distal impact ejecta changed ...

Geological Society of America: Annual Meeting 2000

...ations for gas dynamics, hydrate distribution, and methane expulsion. Ivano Aiello, Univ. of California Sant...Institute of Technology, Global climate change and methane emission from the seafloor. SUPERPLUME EVENTS IN EARTH HISTORY: CAUSES AND EFFECTS (T12) Atlant...

October Geology and GSA Today highlights

...ies of catastrophic releases of the greenhouse gas methane from the seabed, which perturbed the global carbon...event spans about 210,000 years, two thirds of the methane release occurred within only two steps, each of which lasted less than 1,000 years," according to Dr...

Terra spacecraft and ER-2 aircraft begin study of Southern Africa's environment

...d on comparing measurements of carbon monoxide and methane by Terra's MOPITT (Measurements of Pollution in the Troposphere) instrument and the ER-2's MOPITT-A instrument." In addition, air samples along the spacecraft's track were collected by the South African Weather Bureau Aerocommander 690A aircraft. Th...

Carbon diem: Grants awarded to research that seizes excess carbon dioxide

...loping membranes for filtering carbon dioxide from methane and gas streams, developing a vortex tube to spin out carbon dioxide from exhaust streams, and improving the ability of algae to remove carbon dioxide from power plant exhausts. Tornado in a Tube In order to capture carbon dioxide from a power p...

Researchers find key to spurring methane conversion

...'s surface can be coaxed to rapidly convert oil to methane gas in oil-rich soil. Their findings, which are s...(NSF). Petroleum engineers often hit pockets of methane when exploring for oil. According to Lovley, specialized microorganisms that live deep in the earth ...

Study: Methane cleans nitric oxide from power plant emissions

...ineers have found a way to use methane to remove toxic nitric oxide e...lly reducing nitric oxide with methane removes up to 100 percent of nitric oxide from stack gases in a safer and less e...

Fossil plants' ties to ancient carbon redefined

...115 million years ago from clathrates, deposits of methane on the bottom of the oceans. "That's a large reservoir of carbon that we haven't seen change dramatically in human times, but through these means we can identify it as a major player in the carbon cycle through geologic time," she notes. "It's a more...

INEEL microbiologist joins Japanese on expedition to tap marine-methane deposits

...s known to contain large amounts of gas hydrate -- methane gas molecules trapped in lattices of ice -- and ma...sted in methanogens -- microorganisms that produce methane -- for several reasons. The estimated volume of methane gas presently trapped in ocean floor and co...

Distance between atoms is key to iron protein function

... as synthesizing DNA building blocks or converting methane into methanol. Sometimes, in a process called biomineralization, the same intermediate is used to store iron atoms within the protective protein envelope of the iron-storage protein, ferritin. "The puzzle has been how the same intermediate ca...

One theory solves two ancient climate paradoxes

...levels of greenhouse gases like carbon dioxide and methane were much higher then and these gases where what warmed the Earth. Jenkins used a global climate model of the Earth during the Archean with only slightly elevated carbon dioxide, but with tilt to 70 degrees and geography mirroring that 3.8 to 2.5 b...

Evidence for historic global warming published in Science

... information is the "first tangible evidence for a methane dissociation event," a concept that has long been ... According to the hypothesis, vast quantities of methane were stored as frozen gas hydrate in the upper few hundred meters of continental slope sediments bef...

Were the last dinosaurs roasted alive?

...in the Gulf of Mexico unleashed vast quantities of methane that set the air ablaze. At the end of the Cretac...eriod, about 65 million years ago, huge amounts of methane generated by rotting vegetation lay trapped in sediments more than 500 metres below sea level. At th...

Reducing methane emissions could lower overall abatement costs

... and emissions experts has found that by including methane in abatement strategies, the costs of meeting U.S.... paper. "We estimate that for short-term targets, methane can offset carbon dioxide reductions and reduce U.S. abatement costs by more than 25 percent compare...

Microbial hydrocarbon 'cracking'

Scientists revealed biological methane formation from saturated long-chainhydrocarbons ...via several steps to the simplest carboncompounds, methane and carbon dioxide. Aquatic sites with microbial methane production are wide-spread, and methane,si...

Decompression is a gas

...ydrogen to water and methane. Bymeasuring how much methane the animal releases, they obtain an index of how wellthe bacteria are working in the intestine. From the index, they can predict howmuch the risk of decompression sickness is lowered. The researchers say thathydrogen-metabolizing bacteria could also ...

The Sagan criteria for life revisited

...on of life. 3. infrared spectral lines caused by methane in the atmosphere. Although the amount of methane Galileo saw was miniscule -- about 1 part per million -- it is still important. In a oxygen-rich atm...

Bugs Can Ward Off The 'Bends'

...re bacteria thatwere added to their guts, the more methane they produced. Kayar says the bacterial supplements appear as harmless as live yogurt. "Theseare microbes that you have in your intestine right now," he says. The treatedpigs seemed to suffer no ill effects and their altered gut microflora laterretur...

A Bacterium Can Help Slow Global Warming

A BACTERIUM that digests methane is doing its bit to slow global warming, saythe Am... Although most of the bacteria that produce methane live in acidicwetlands in the northern hemisphere, these environments were thought to beunsuitable f...

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