Critics of the extension argue it will cause more pollution, increase health problems and fragment communities.
If you don't ease road congestion there will be more pollution damaging the environment.
Development often jumps green belts, meaning commuters must travel farther to work, emitting more pollution as they do.
"I don't know many drivers who would be concerned about creating more pollution, " said Zhang, a 26-year-old law student.
Operating as such, they add, is not just inefficient but also a dirty proposition that results in more pollution.
Health experts say coal-burning power plants produce far more pollution linked to respiratory health problems than natural gas-fired plants produce.
If fossil fuels are used, the process then consumes more energy than is produced, and the result is likely more pollution.
Companies that produce more pollution would then have to buy carbon credits from those who find a cleaner way of doing business.
Hydrogen has the virtue of removing the auto industry from the environmental debate, even if it creates the same or more pollution upstream.
Andy Atkins, executive director of Friends of the Earth, said the road would cause more pollution, damage the environment and do little to boost the economy.
Here the low price of petrol, much less than half of that in other developed countries, has predictably resulted in ever-larger and heavier vehicles that consume more fuel and road, and generate more pollution, than is necessary.
"In fact, when you burn coal, you emit more acid rain pollution, more air pollution, more smog and more global warming pollution which threatens the entire planet, " said Becker, global warming program director for the Sierra Club.
Boilers burning dirty heating oils No. 4 and No. 6 produce 50% more air pollution than all of the cars and trucks in New York City and contribute to more than 3, 200 premature deaths every year, according to recent reports by the Environmental Defense Fund and the New York City Department of Health.
Today, because of your work, air pollution is down by more than half, and lead pollution is down more than 90 percent from a generation ago.
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The industry that deals with it is becoming more efficient, the technologies are getting more effective and the pollution it causes is being controlled more tightly.
The ALA assessed levels of ozone pollution, more commonly known as smog, and levels of particle pollution, or air-born toxins that can potentially be lethal if inhaled at high enough levels.
The debate over air pollution and, more specifically, the regulation of air pollution, raged on this week as the Environmental Protection Agency (EPA) watered down its cross-state pollution rule and House Republicans moved to delay new rules on toxic air pollution from cement plants, solid waste incinerators, and industrial boilers.
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There are growing fears that strong winds have dispersed the pollution more widely than previously thought.
Ertel, who got his start trading natural gas and more-established pollution credits (such as for sulfur dioxide), isn't spooked by uncertainty.
But if reports about Soviet nuclear waste being dumped prove true, then Russia will have even more accusations of pollution to answer.
There will be talk, and fights, of course, but for those hoping to avoid more regulations on pollution, it could be time to exhale.
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After hearing all the evidence, the council's scrutiny panel will make recommendations about any improvements which could be introduced to manage any future sewage pollution more effectively.
"If we only rely on domestic resources to develop the animal-husbandry industry, China's grain production will face challenges, and there will be more serious environmental pollution problems, " Mr. Li said.
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Granted, these are not budget line items that are easily swapped in for each other, but a tie-in to obesity and diabetes may just make tackling air pollution more economically viable.
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Yet 82 percent of teens and 76 percent of boomers think government leaders should do more to control pollution from the oil and chemical industries, even if that increases the price of gas and oil.
And developing basic low-cost pollution technology for coal-fired power generation in the third world would probably get more bang for the pollution buck than just about anything else.
Installing modern and widely-available pollution control technologies can reduce more than 90% of the mercury pollution that is harming both children's health and our environment.
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It is frightening to think about the pollution that is floating out there still and more frightening to think about the pollution we cannot see.
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It's also more likely that high pollution levels will occur because heat creates the conditions for photochemical smog.
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