States are also not permitted to approve a new plant if the added emissions would exceed a given area's standards.

Texas, for example, emits more than France, while California's emissions exceed those of Brazil.

The Project Vantage's low emissions should meet or exceed the world's strictest standards, its developers say.

Washington has followed the same approach as California, prohibiting coal plants whose emissions would exceed those of natural gas plants.

If these trends continue, China's emissions will exceed US emissions in 2017.

If nothing is done, she said, "emissions from light trucks will exceed the emissions from cars by 60 to 80 percent in 2007."

The agency has calculated that annual emission should not exceed 32Gt by 2020 if the world is to escape the most damaging effects of global warming.

If any of these parts fail to function or function improperly, your vehicle's emissions may exceed federal standards.

University studies show that emissions from livestock operations rarely exceed the limits set by the federal government.

If emission exceeds what is permitted by its allowances, an installation must purchase allowances from others.