Sentences with phrase «now on carbon dioxide»

Not exact matches

While U.S. power plants have limits on other air - born pollutants — like nitrogen and sulfur oxides that cause acid rain — there haven't been limits, until now, on the levels of carbon dioxide emissions that power plants can emit.

The current Wikipedia entry on air pollution, for example, now asserts that pollution includes: «carbon dioxide (CO2)-- a colorless, odorless, non-toxic greenhouse gas associated with ocean acidification, emitted from sources such as combustion, cement production, and respiration.»

The increase in carbon dioxide that is now occurring is expected to have dramatic consequences for life on Earth as a result of the so - called greenhouse effect which will make the Earth hotter.

But the impact these gases have on the climate has until now not been as widely studied as the effects of carbon dioxide emissions.

About 6000 years ago, levels of atmospheric carbon dioxide rose — and until now slash - and - burn by the 12 million humans on the planet at the time has been blamed.

For example, it is now straight - forward to calculate that the carbon dioxide emissions for each seat on a return flight from, say, London to San Francisco causes about five square metres of Arctic sea ice to disappear.»

WASHINGTON, D.C. — President - elect Donald Trump's choice to lead the U.S. Environmental Protection Agency expressed doubt about the science behind global climate change during a contentious Senate confirmation hearing on Wednesday, but added he would be obliged for now to uphold the EPA's finding carbon dioxide poses a public danger.

Now the first experiments exposing deep - sea animals to the greenhouse gas suggest that carbon dioxide harms life on the sea floor.

Now, a study on one of those endeavors, reported in the ACS journal Environmental Science & Technology Letters, has found that within two years, carbon dioxide (CO2) injected into basalt transformed into solid rock.

Now, we have already synthesized this suite of molecules and have shown that they can capture and release carbon dioxide and we're testing their effect on RuBisCo that's been extracted from plants and seeing really, really, exciting results.»

«Human influence is so dominant now,» Baker asserts, «that whatever is going to go on in the tropics has much less to do with sea surface temperatures and the earth's orbital parameters and much more to do with deforestation, increasing atmospheric carbon dioxide and global warming.»

If we embark on a path that is equivalent to setting emissions to zero now (say by having a period of negative emissions in the 2035 to 2050 time frame), and call the sequestration we accomplish mitigation then mitigation can arrest climate change, make adaptation unneeded and bring us to a safe concentration of carbon dioxide in the atmosphere as Hansen has pointed out.

Now, scientists at Rensselaer are turning these atmospheric assumptions on their heads with findings that prove the conditions on early Earth were simply not conducive to the formation of this type of atmosphere, but rather to an atmosphere dominated by the more oxygen - rich compounds found within our current atmosphere — including water, carbon dioxide, and sulfur dioxide.

After more than a year of delay, the EPA is finally now requesting public comments on whether carbon dioxide and other heat - trapping pollutants are endangering our health and our climate.

Given the atmospheric lifetime of carbon dioxide is many hundreds to thousands of years, we can now understand that long - lived greenhouses will also continue to exert a warming influence on the worlds oceans for a very long time.

Where would carbon dioxide emissions be if everyone on Earth was using fossil fuels at the same pace, per capita, as the United States is now?

Now, if there's a single take - away from this summary, it would be that the science on the relationship between fossil fuel combustion, rising atmospheric carbon dioxide, and global warming and climate change was really settled by 1979.

The review, which is being published in the journal Science on Friday, concludes that the human - driven buildup of carbon dioxide under way now appears to be far outpacing past natural events, meaning that, for ocean chemistry particularly, the biological implications are potentially enormous — and laden with the kind of uncertainty that is hard to see as a source of comfort.

[UPDATE, 3/21, 6 p.m.] Jim Hansen and Biographer on Democracy Now It's worth adding that James Hansen discusses climate censorship and his latest draft paper calling for a return to 350 parts per million of atmospheric carbon dioxide on Amy Goodman's Democracy Now radio and Web program.

The official, Jason K. Burnett, once a Bush appointee and now an Obama supporter, told the House Select Committee on Energy Independence and Global Warming that the argument for putting off any carbon dioxide limits was made by «individuals working for particular oil companies, Exxon Mobil,» as well as oil industry trade associations.

Particularly given how Supreme Court machinations now potentially imperil the president's Clean Power Plan cutting power plant carbon dioxide emissions, it's more important than ever for the administration to «push on what the President put his his Climate Action Plan in 2013.»

I have yet to see a serious challenge to the math on this done by Vaclav Smil of the University of Manitoba, who has noted that handling just 10 percent of today's carbon dioxide emissions would require more pipelines and other equipment than is now used worldwide to extract oil — a precious commodity — from the ground.

On these numbers alone = ~ 0.5 parts per million of carbon dioxide less per year between now and eternity

His critics show few signs of ever accommodating the ideas he now presses, which include a prompt moratorium on new coal - burning power plants until they can capture and store carbon dioxide and a rising tax on fuels contributing greenhouse - gas emissions, with the revenue passed back directly to citizens, avoiding the complexities of «cap and trade» bills.

Here's the keystone line from one of a series of papers on this energy gap by Hoffert et al (Science, 2002), John Holdren (pdf), and others: «Mid-century primary power requirements that are free of carbon dioxide emissions could be several times what we now derive from fossil fuels (~ 10 [to the 13th power] watts), even with improvements in energy efficiency.»

O'Rourke always hated the bike (in print, at least), and now that it's becoming more of a needed transportation mainstay on crowded American city streets, reducing pollution and carbon dioxide emissions and improving health, O'Rourke is airing his feelings once again.

A few days ago the «shocking» headlines came out, describing some new research on how much methane is now seeping out of the Arctic seafloor — a greenhouse gas far more potent than carbon dioxide, but much shorter lived in the atmosphere — as the region warms and permafrost melts.

Roger Revelle, one of the pioneering researchers in the study of the human influence on the atmosphere, carbon cycle and climate, gave a prescient lecture on carbon dioxide, climate and the oceans in 1980 that was recorded by the Lawrence Livermore National Laboratory and now surfaces via the Web site Climate Science TV.

I've written off and on about how the divide in the United States over how quickly to curb carbon dioxide emissions has little to do with the now familiar red state versus blue state dynamic, and is more about which regions have grids and economies most wedded to coal and oil, and which don't.

Right now, on this freakish morning during Earth's careening Sixth Mass Extinction, carbon dioxide - equivalent greenhouse gases (CO2e) are nudging past 478 ppm... [MIT]

All of our options for keeping warming below 2C above pre-industrial temperatures now involve capturing carbon dioxide and storing it underground — a technology that doesn't yet exist on a large scale, according to new research.

Now it's thought that storing carbon dioxide underground on a large scale is decades away.

«As the earth goes barreling past 400 parts per million of carbon dioxide in the atmosphere, let's take action now, this year, this Congress, to address climate change,» Holt said on the House floor.

With nuclear providing always - on electricity that will become more cost - effective if a price is placed on heat - trapping carbon dioxide emissions, utilities have found it is now viable to replace turbines or lids that have been worn down by radiation exposure or wear.

Atmospheric concentration of carbon dioxide has now reached 400 parts per million (ppm), up from 280ppm three centuries ago; the Earth is on average 1ºC hotter than in pre-industrial times.

«On the other hand all the carbon dioxide we're pouring into the air right now is the obvious big enchilada.

The future of the Earth and of human civilization now depends greatly on a single number: 350 - the concentration of carbon dioxide (CO2) in the atmosphere.

As the deep oceans turn over, on an eight - hundred - year cycle of circulation, they will take the carbon dioxide now in the atmosphere down into Davy Jones's Locker, where it will be of no use to man, beast, or plant life.

Right now, the D.C. City Council is considering introducing a price on carbon that would significantly drive down carbon dioxide emissions in our city — while giving revenue directly back to District residents.

Now, imagine that on the other side of your light switch, one of two scenarios exists: the first is a «clean» world where wind turbines spin to generate electrons to power your light bulb and the other is a «dirty» world where a coal - fired power plant lumbers into operation, spewing carbon dioxide (CO2) and other pollutants into the atmosphere, to create the same level of brightness in your living room.

John Everett, a former scientist with the National Oceanic and Atmospheric Administration who's now a consultant on ocean issues, told the subcommittee that the oceans will remain alkaline even as they absorb more carbon dioxide.

In a story published on the WSU website and now getting wide distribution Deemer said she measured dissolved gases in the water column of Lacamas Lake in Clark County and found that methane emissions — a substance 25 times more effective than carbon dioxide at trapping heat in the atmosphere — jumped 20-fold when the water level was drawn down.

Now, Mr. Inslee pointed out that he thinks there is a physical explanation based on a blanket of carbon dioxide in the reflection.

An influential expert on global warming who for nearly 20 years has pressed countries to cut emissions of carbon dioxide and other heat - trapping gases now says the emphasis on carbon dioxide may be misplaced.

For a preview of what this could mean to American families, one can look to Germany, where due to restrictions on carbon dioxide emissions, electricity costs three - times more than in the US and gasoline is now $ 8.00 per gallon.

At this moment, our national economy is under threat by carbon regulation schemes on three fronts: The Copenhagen conference designed to create a world carbon regulatory authority which could undermine our sovereignty; The cap and trade bill thatâ $ ™ s been passed by the House of Representatives and now awaits Senate approval; and the Obama Administrationâ $ ™ s decision that it can regulate carbon dioxide via the EPA even without approval by Congress.

Yet carbon dioxide would continue to build up in the atmosphere — breaching the level of 450 parts per million by volume (ppmv) that most climatologists now recommend as an upper limit, then passing the 550 ppmv mark that is the goal of many current policy initiatives, and eventually reaching 1,000 ppmv, a level not seen on Earth since the days of the dinosaurs.

I couldn't quite believe what I was hearing from him, thought maybe I had misunderstood what he was saying, so, I proposed a scenario as he now accepted that carbon dioxide could pool on the ground.

Up until now, 29 per cent of human emissions of carbon dioxide has been taken up by the oceans, 28 per cent has been absorbed by plant growth on land, and the remaining 43 per cent has accumulated in the atmosphere.

Despite decades of persistent uncertainty over how sensitive the climate system is to increasing concentrations of carbon dioxide from the burning of fossil fuels, we now have new satellite evidence which strongly suggests that the climate system is much less sensitive than is claimed by the U.N.'s Intergovernmental Panel on Climate Change (IPCC).