Poorer members with below-average emissions, such as these four, will pay little or no tax.

Scenarios with falling emissions had a high level of government intervention in the economy.

We will soon be bombarding the universe with more radio and infrared emissions than ever before.

One is a 2-liter engine with 136 horsepower (23 percent more than last year) and lower emissions, according to Ford.

We have substantially corrected the problem with emissions to the atmosphere.

Many of these changes were made to comply with ever-increasing federal emissions and safety regulations.

Since 2002 policy cues have been given using the income tax system to encourage the purchase of company cars with low emissions.

The 13B was designed with both high performance and low emissions in mind.

Many studies link population growth with emissions and the effect of climate change.

But the biggest direct impact will come from the provisions dealing with toxic emissions.