Stephen Hardwick, from the British Airport Authority, which runs Heathrow, Gatwick and Stanstead said efforts were already being made to limit the impact of noise and air pollution and road congestion around the airports.

BBC: Delays at a London airport

At issue now is the Cross-State Air Pollution Rule that attempts to limit the levels of harmful emissions as they traverse across state lines.

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There's no example of an air pollution problem anywhere in the world that has been solved without a cap or legal limit on how much of that pollution can be dumped into the sky.

FORBES: Market Man

As president of the Environmental Defense Fund, Fred Krupp helped establish a market-based cap-and-trade system to limit acid rain pollution in the late 1980s.

FORBES: Market Man

Furthermore, Doniger inexplicably ignores the fact that the EPA is already moving forward with efforts to limit carbon pollution from stationary-sources like power plants and is set to forge ahead in the absence of Congressional cap-and-trade legislation.

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Environmental groups, foundations, and major oil and gas companies came together to support stringent measures to protect air and water from pollution in the Appalachian region, and they invited other groups to join in and help limit pollution from fracking.

WSJ: Fracking coalition upsets both greens and drillers

The authors say a higher limit could increase gas emissions and air pollution and could lead to increased obesity, with more people taking advantage of shorter car journeys.

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