Meanwhile, according to the American Public Transportation Association, mass transit produces 95
percent less carbon monoxide, 90 percent less volatile organic compounds, and about half as much carbon dioxide as private vehicles.
Nakicenovic writes, «The average annual rate of decline is about 1.3 percent, meaning that every year about 1.3
percent less carbon is emitted to generate one dollar of value added.
Not only has the Balanced Fund largely outperformed the S&P 500 Index over the past five years; the Fund's carbon footprint is 49.5
percent less carbon intensive than that of the S&P 500, according to a recent analysis undertaken for Green Century by Trucost.
About half of this reduction is due to differing carbon intensities of the fuels (natural gas emits 40
percent less carbon than coal per unit of heat).
In 2015 the economy was 15 percent larger than in 2005, but the country emitted 23
percent less carbon dioxide per dollar of GDP last year compared with 10 years prior.
Our neighbors to the south also committed to emit 22
percent less carbon in 2030 compared to a business - as - usual baseline.
On - board hydrogen fuel - cells could be up to 80 percent more fuel - efficient, and emit 45
percent less carbon dioxide, than today's internal - combustion engine.
This proven technology has helped shift more electricity generation to natural gas, which emits less nitrogen oxides, sulfur dioxide, mercury and more than 50
percent less carbon dioxide than coal.
The facelifted Mazda Demio will produce 11
percent less carbon dioxide (CO2), 6 percent less nitrous oxide (NOx), 5 percent fewer non-methane hydrocarbons (NMHC), and 7 percent less sulphur oxide (SOx) over its lifetime than the previous model.
The facelifted Mazda Axela will produce five
percent less carbon dioxide (CO2), three percent less nitrous oxide (NOx), two percent fewer non-methane hydrocarbons (NMHC), two percent less sulphur oxide (SOx), and three percent less particulate matter over its lifetime than the previous model
The diesel engine will meet emissions standards in all 50 states and will produce up to 20
percent less carbon emissions than a regular gas - powered engine.
The Zafira and Combo CNG (Compressed Natural Gas) produce almost no soot particles, 20
percent less carbon dioxide than a comparable gasoline model and an up to 80 percent reduction in other harmful emissions.
When you account for these factors, corn ethanol — currently the most widely produced biofuel in the United States — generates about 43
percent less carbon dioxide than gasoline.
Combining several techniques, Aravind Eye Care System in the south of India emitted 96
percent less carbon than the U.K. while producing comparable or better health outcomes for one of the world's most common surgical procedures, cataract surgery.
In 2005, residents of Portland, Oregon — where regulations encourage infill development — emitted 35
percent less carbon dioxide than the average resident of the country's 100 largest metropolitan areas.
Not exact matches
Impact on oil and gas production: compared to a
carbon tax, Alberta's policy offers emitters
less of an incentive to reduce production in order to cut GHGs, notes Leach: «assuming that the facility reduced production by 10
percent, and that emissions decreased proportionately (a simplifying assumption), the facility's emissions intensity would not change, so its
carbon liability per barrel of oil produced would also remain constant.»
«
Less than 1
percent of our
carbon emissions are offset by this,» says Jolanka Nickerman, manager of Google's
Carbon Offsets Team.
They determined a material with
less than 90
percent carbon and enhanced by oxygen, rather than nitrogen or sulfur, worked best for both
carbon capture and methane selectivity, especially for materials activated at temperatures approaching 800 degrees Celsius.
By looking at the chemistry of rocks deposited during that time period, specifically coupled
carbon and sulfur isotope data, a research team led by University of California, Riverside biogeochemists reports that oxygen - free and hydrogen sulfide - rich waters extended across roughly five
percent of the global ocean during this major climatic perturbation — far more than the modern ocean's 0.1
percent but much
less than previous estimates for this event.
The low -
carbon fuel standard orders providers to reduce the
carbon intensity of their fuels by 10
percent by 2020 through efforts such as blending in biofuels that result in
less greenhouse gases emitted when burned.
Engineered plants conserve 25
percent more water by only partially opening their mouth - like stomata, allowing
less water to escape through transpiration while
carbon dioxide enters the plant to fuel photosynthesis.
The result: Ice containing 2
percent carbon dioxide was 38
percent less resistant to fracturing than pure ice, the study found.
That is because more than 80
percent of their industrial waste is
carbon dioxide; by contrast, the figure is
less than 20
percent in the power plants, said Wang Yongsheng, engineer of Shenhua's
carbon capture and storage project.
But if people were better at using
less electricity, which accounts for 38
percent of
carbon dioxide emissions in the United States, the potential for reducing emissions would be huge.
Less than 1
percent of their mass is
carbon, and even this material is largely oxidized and hence an insignificant source of methane.
Exhaled air contains 17
percent oxygen,
less than 21
percent of fresh air, and 4
percent carbon - dioxide, which can inhibit cardiac contraction.
Since carbohydrate is richer in oxygen than fat, its metabolism requires 25
percent less water and generates 50
percent more
carbon dioxide.
A CFRP part typically weighs 50 to 70
percent less than a steel part that can withstand the same forces, but
carbon fiber doesn't have the elasticity of the metals it replaces.
The standard brakes are large AMG units, but a
carbon - ceramic setup that provides even better stopping power and weighs 20
percent less is an option.
With increased use of aluminium and
carbon fiber reinforced plastics, not only does the new R8 weigh
less, but it is also 40
percent more torsionally rigid.
The aircraft structure is made of lightweight
carbon fiber reinforced plastic, therefore, it uses 25
percent less fuel and produces 25
percent less fewer environmental damaging emissions.
The oil sands are still a tiny part of the world's
carbon problem — they account for
less than a tenth of one
percent of global CO2 emissions — but to many environmentalists they are the thin end of the wedge, the first step along a path that could lead to other, even dirtier sources of oil: producing it from oil shale or coal.
However, when that sink begins to become
less effective, the
percent falls, and the diminished capacity to absorb our
carbon emissions would be counted as a feedback.
Libby's article speaks volumes about the difficulty of moving a world that is more than 80
percent dependent on fossil fuels toward one largely free of
carbon dioxide emissions from such fuels within two or three generations, even as the human population heads toward 9 billion (more or
less).
But because they are released in tiny traces, they currently contribute
less than 1
percent of the climate - warming effect from human - generated
carbon dioxide.
Americans will have to pay much higher electricity prices despite the minuscule benefits of the Clean Power Plan, which reduces global
carbon dioxide emissions by
less than 1
percent and global temperatures by 0.02 degrees Celsius by 2100, according to EPA's own models.
For our part, the United States agreed to emit between 26
percent and 28
percent less CO2 by 2025 than we did in 2005, when we produced 7.1 billion metric tons of
carbon.
Most corporations can become
carbon neutral at a one - time cost of
less than 1
percent of sales, Hintlian said.
In September, a government official suggested that the 2030 target could be identical to or only marginally
less than the 2020 target — a 25
percent to 30
percent cut in
carbon pollution, based on 1990 levels.
Ramping up the tax by $ 5 a year would shrink the use of
carbon fuels so drastically that, by my calculations, US
carbon emissions in 2030 would be 40
percent less than they were in 2005 (a standard baseline year).
The
carbon intensity of the Chinese economy, while still twice that of the United States, has fallen 25
percent in
less than a decade.
Citing but one example, 2.5 billion years ago the sun's brightness was 20
percent to 30
percent less than it is today (compared to the 2
percent change in energy balance associated with a doubling of
carbon - dioxide levels) yet the oceans were unfrozen and the temperatures appear to have been similar to today's.
The
carbon cost of such expansion, however, is low: to bring electricity to those without it would increase global
carbon dioxide emissions by
less than 1
percent.
Preventing
carbon dioxide levels from rising to potentially dangerous levels could cost
less far
less than originally projected —
less 1
percent of gross world product as of 2050 — but a major shift in the way energy is found, transformed, transported and used will be necessary to prevent a severe energy crisis within the next century, say researchers from the The Earth Institute.
Lackner and Sachs estimate that a program to moderate the Earth's
carbon dioxide levels could cost
less than 1
percent of projected gross world product as of 2050.
Not only have global
carbon emissions continued to rise 3
percent a year, but the science has made more clear that human populations and natural systems face serious risk of substantial climate damage at warming
less than 2 °C, they said.
In 2010, the Yale Project on Climate Change released a study claiming that «
less than half of Americans (45
percent) understand that
carbon dioxide traps heat near the Earth's surface, and a majority think that the hole in the ozone layer contributes to global warming.»
It states that to stand a good chance (a probability of 66
percent or more) of limiting warming to
less than 2 °C since the mid-19th century will require cumulative CO2 emissions from all anthropogenic sources to stay under 800 gigatons of
carbon.
EVs powered by the grid currently produce 54
percent less (lifetime)
carbon pollution than gasoline cars, which could grow to 71
percent by 2050 as our power supply gets cleaner.
A personal CO2 limit of
less than a ton per year does not even imply the right to buy that much fuel, because CO2 is only 27
percent carbon.