In the fight for climate preservation, a growing number of people are planning to relieve the earth of more carbon-chugging entities by abstaining from reproduction – saving the planet a tidy 58.6 tonnes of carbon a year in the process. But we hear comparatively less extreme recommendations all the time: go vegan (or at the very least, flexitarian), take trains instead of planes, browse the rails of secondhand shops instead of Primark.
A sliver of hope against a backdrop of gloom: 18 countries showed a sustained decline in their carbon emissions from fossil fuel use over the past decade. This trend, averaging 2.2% a year over the period 2005-2015, is evident in less than 10% of the world’s countries, mostly in the EU, but accounts for 28% of global emissions.
Researchers are trying to make a cleaner concrete to cut greenhouse gas emissions and curb climate change. The industry is estimated to account for at least 7% of global carbon dioxide emissions.
Converting methane to carbon dioxide could help.
Carbon removal technologies, promising though they may be, are overhyped, says David Keith, an applied physicist at Harvard and Carbon Engineering's founder. "And the overhyping has become a political trick." That hype, he says, makes it easier for policymakers to avoid drafting near-term mitigation strategies and exceed their carbon budgets, in hopes that their debt will be repaid at some point in the future. What begets this trickery? Computer simulations.
Higher levels of CO2 are lowering amounts of protein, iron, zinc, and B vitamins in rice.
Methane molecules trap roughly 30 times more heat than carbon dioxide over a century, and the gas comes from agriculture, coal and gas production, and landfills. Nitrous oxide, known as laughing gas, trap about 300 times more heat than carbon dioxide; it’s emitted by soil fertilizers and chemical production.
Every volcanic eruption that occurs on planet Earth is full of pollutants. Not just ash and dust, mind you, but also carbon dioxide: one of the strongest greenhouse gases on our planet. In the largest cases, a single volcanic plume, lasting only hours, might add many millions of tons of carbon dioxide to the atmosphere. Could it be the case, then, that individual volcanoes add more carbon dioxide to our atmosphere than human activity does? To find the answer, we've got to look to the scientific data.
Currently, carbon capture typically involves grabbing CO2 emissions from sources like coal-fired power plants, then storing them underground so they can't enter the atmosphere and heat the planet. De Luna and his colleagues, including Oleksandr Bushnuyev, a University of Toronto postdoctoral fellow, are studying developing technologies that could make storage secondary — or even unnecessary.
After months of gloomy headlines from the world of climate science — melting icecaps, possible methane eruptions in the tundra, snowballs slung on the Senate floor — there was a small ray of sunshine last week.
I have bad news for this feel-good caucus. Want to fight climate change? You have to fight cars. In the nation’s largest cities, cars account for about a third of greenhouse gas emissions. Nationally, transportation is now the single largest contributor to carbon emissions.
Some lifestyle choices matter more than others.
The United States, with its love of big cars, big houses and blasting air-conditioners, has contributed more than any other country to the atmospheric carbon dioxide that is scorching the planet.
“In cumulative terms, we certainly own this problem more than anybody else does,” said David G. Victor, a longtime scholar of climate politics at the University of California, San Diego. Many argue that this obligates the United States to take ambitious action to slow global warming.
But greenhouses gases like CO2 are so named for their ability to magnify the sun's energy, and 50 million years ago the sun wasn't as hot— our star is getting hotter with age. During the Eocene, it took more atmospheric CO2 to influence temperatures than it does today. In fact, if we don't change our behavior, 2100 will be as hot as the Eocene with much less atmospheric CO2 than was present at the time. A hotter sun means we get more bang for our CO2 buck.
Scientists have spent decades measuring what was happening to all of the carbon dioxide that was produced when people burned coal, oil and natural gas. They established that less than half of the gas was remaining in the atmosphere and warming the planet. The rest was being absorbed by the ocean and the land surface, in roughly equal amounts.
In essence, these natural sponges were doing humanity a huge service by disposing of much of its gaseous waste. But as emissions have risen higher and higher, it has been unclear how much longer the natural sponges will be able to keep up.
For the third year in a row, carbon emissions from fossil fuels have hit a record high.
Use this online calculator to obtain an estimate of your personal greenhouse gas emissions or your family''s greenhouse gas emissions. Then move on to the next section of the calculator to explore actions you and/or your family can take to lower your emissions.
Carbon Brief is a UK-based website covering the latest developments in climate science, climate policy and energy policy. We specialise in clear, data-driven articles and graphics to help improve the understanding of climate change, both in terms of the science and the policy response.
The only app that pits volcanoes against spaceships. Learn how the carbon footprint of one thing stacks up against another. Simple, yes? Let’s CARBONIZE.
The Global Carbon Project (GCP) integrates knowledge of greenhouse gases for human activities and the Earth system. Our projects include global budgets for three dominant greenhouse gases — carbon dioxide, methane, and nitrous oxide — and complementary efforts in urban, regional, cumulative, and negative emissions.
Post Carbon Institute is a think, action and education tank offering research, project tools, education and information to implement proactive strategies to adapt to an energy constrained world. The development of Post Carbon Institute came out of concern for the environmental, social, political and economic ramifications of global over-reliance on cheap energy.
To develop and commercialize a scalable solution for CO2 mitigation that is both economically and technically sustainable.
When you buy a TerraPass, your money funds clean energy and efficiency projects such as wind farms. These projects result in verified reductions in greenhouse gas emissions.