Pressed by the Congress and the courts, President Bush finally announced this week that he would lay out the principles for a bill to combat global warming.

The target of Mr. Bush’s plan is to stop the growth of the nation’s greenhouse gas emissions by 2025.

Until now, Bush refused taking any measures like those proposed in the 1997 Kyoto treaty, declaring he was against proposals that hurt the U.S. economy. But he has now decided to conceive a suitable plan, that doesn’t oppose his political strategy and won’t be too costly to consumers or industry.

Last June, before an important international summit focused on environmental problems, Bush suggested that the United States together with a dozen other nations that produce 85% of the greenhouse gas emission should start a campaign to limit the emissions and reduce them. The goals were supposed to be established at the end of Bush’s term.

The nations participating in the summit are due to meet in Paris on Thursday and Friday, and Bush’s new plan is supposed to prove the U.S. has made efforts in this direction.

The president plans to use technology as a major factor in achieving the environmental goal. One option would be to reduce reliance on gasoline by developing cars with hydrogen-fueled engines.

In the same time, the Endangered Species Act is to give polar bears special protection because of their icy habitat that is currently melting at an alarming rate.

The Clean Air Act could also be used to force the Environmental Protection Agency to take more severe measures for limiting the production of carbon dioxide, a gas that greatly contributes to global warming, as scientists say.

All three presidential candidates – Democratic Senators Barack Obama and Hillary Rodham Clinton and Republican Senator John McCain – are in favor of a more dynamic program against global warming. They all support obligatory limits on greenhouse gases.