The climate change bill that senators are to begin debating this week is a hugely important signal of intent on behalf of U.S. legislators. Yes, negotiations could still alter the legislation. But the bill's core proposition is correct: Unless the United States radically reduces its greenhouse gas emissions, along with other major emitters, the damage to the climate will be irreversible. ...more

June 2, 2008

Ground operations began Monday at the Phoenix landing site at Mars' north pole, with the latest images from the robotic lander showing a bizarre, checkerboard-type landscape apparently carved by the movement of ice lying only inches beneath the surface. ...more

May 27, 2008

The world is losing momentum in the battle against global warming, the U.N. climate chief warned Saturday, urging environmental ministers from wealthy nations to revive the effort by setting clear targets for reducing greenhouse gases. ...more

May 25, 2008

According to a new poll by Public Agenda and Foreign Affairs, six out of 10 Americans think reducing energy dependence will help national security "a great deal." They worry about global warming, too. But most of all they care about putting cheaper gasoline in their cars. ...more

May 12, 2008

Struggling with record diesel prices, the trucking industry's main trade group introduced a plan Thursday to reduce fuel consumption and emissions over the next decade mainly by having its members slow down. ...more

May 9, 2008

It's been dubbed a Noah's Ark for plant life and built to withstand an earthquake or a nuclear attack. ...more

February 26, 2008

It was nearly 50 years ago that Physicians for Social Responsibility first helped find traces of radioactive waste in children's teeth as a result of atmospheric nuclear testing. ...more

February 23, 2008

Florida is fighting for states' rights - as well as clean air - by joining the lawsuit filed by California against the U.S. Environmental Protection Agency. ...more

February 23, 2008

The cold fronts, which the weather reporters keep showing, never seem to get much farther south than Orlando. We may not see any freezing temperatures this year. And the chance of getting any appreciable rain also will not happen. I am supposing that we must have gotten at least one good freeze because I see that most of the citrus groves fruits are ready for harvesting. But if this climate warming continues will the growers, who depend upon the freezing climate and rain, be able to continue? Watering restrictions will include not only homeowners but the growers also? ...more

February 14, 2008

At dusk on New Year's Eve, Erika Gunderson got into a taxi in New York City and entered a digital-age mystery. ...more

February 3, 2008