Sentences with phrase «concerns about methane»

Concerns about methane emissions persist, but notwithstanding that challenge, two greater problems loom: First, shifting significantly away from coal to natural gas doesn't get the planet anywhere close to the carbon - reduction levels scientists say we must reach.

Pruitt said he was concerned about methane as a greenhouse gas, but not «deeply concerned.»

I am very concerned about methane leakage, short and long term.

Not exact matches

On the other hand, voters concerned about climate change remain concerned about reliance on natural gas because natural gas (methane) is itself a potent greenhouse gas.

«Reducing methane emissions is a critical issue not only for the industry, but for everyone concerned about climate change,» he said.

Concern about a possible eruption has grown since 2010, when research cruises over the shelf by Natalia Shakhova and Igor Semiletov, both now at the University of Alaska at Fairbanks, found plumes of methane as much as a kilometre wide bubbling to the surface.

Addressing concerns about keeping the process carbon - neutral, Paul Dauenhauer, another graduate student working on the project, notes that while methane is a fossil fuel, there are other ways to heat the catalyst that don't involve burning petrochemicals.

«The bottom up is great because it can tell us where all the cows are that are emitting methane, or where are all of the landfills that we should be concerned about,» Miller said.

While rising carbon dioxide emissions are a primary concern of those worried about climate change, emissions of methane, another potent greenhouse gas, have also risen in recent years.

But natural gas consists predominately of methane, so even small leaks from natural gas wells can create large climate concerns because methane is a potent greenhouse gas — it's about 30 times more effective at trapping solar heat than carbon dioxide over a 100 - year period.

This gives us much reason to be concerned about the trajectory of the vast methane stores leaking from the East Siberian Arctic Shelf.

But we do need to be concerned about man - made methane emissions.»

However, as a climate scientist I remain much more concerned about the fossil fuel industry than I am about Arctic methane.

We are concerned about the effect of methane and black carbon primarily because they are exacerbating the threats posed by carbon dioxide.

Peer - reviewed studies have raised concerns about how much methane is leaking throughout the production and transmission of natural gas, casting doubt on whether it really is better for global warming than coal, which burns 50 percent more carbon than natural gas.

Environmentalists have long been concerned about the risks fracking poses to drinking water via the vast amount of waste that it produces, and the potential for methane and other chemical migration into aquifers.

Why the heck would they be concerned about reducing methane emissions if global warming is primarily a product of natural variation?

Despite much (valid) concern about amplifying climate - methane feedbacks and leaks from «fracking» activity, the isotopic data suggest that the increase of CH4 emissions is more a result of agricultural emissions.

And it is this scenario, or the even more chilling worse case of very rapidly ramping Arctic methane outbursts, that we should be very concerned about.

In recent years, climate scientists have been concerned about a so - called «methane time bomb» on land, which would be detonated when warming Arctic temperatures melt permafrost and cause frozen vegetation in peat bogs and other areas to decay, releasing methane and carbon dioxide.

There are also growing concerns about trends for some other greenhouse gases — in particular, the second most - important man - made planet warmer, methane, the main constituent of natural gas.

Environmentalists, myself included, are often more concerned about the amount of raw methane released in gas development than the much - publicized fracing issue, even though their presentations may lead with the fracing controversy.

Are disaster scenarios about tipping points like «turning off the Gulf Stream» and release of methane from the Arctic a cause for concern?

You've likely already seen concerns expressed about methane emissions from geological sources, as well as from cattle and other livestock.

Study lead author Natalia Shakhova said it was too early to say if we're about to pass a tipping point where massive amounts of stored methane are released into the atmosphere, triggering rapid warming, but that is a concern.

But while scientists know that «fugitive methane» is a concern, there's much uncertainty about the full extent of the problem.

Underlying this new pessimism is increased concern about feedback effects — for example, the release of methane, a significant greenhouse gas, from seabeds and tundra as the planet warms.

Nobody regards the case as closed, and more research is necessary, but most of the methane deposits lining the margins of continents would seem to be fairly low on the list of scientific concerns about global warming.