Posted: 3:12 PM The Pacific Islands Forum called on all nations Thursday to pledge a 50 percent cut in their emissions of greenhouse gases by 2050.

Updated: 10:29 AM New TV ads are encouraging Brazilians to save water — by urinating in the shower.

Posted: 3:38 PM Boat captain Tad Burke looks out over Florida Bay and sees an ecosystem that's dying as politicians, land owners and environmentalists bicker.

Updated: 3:35 PM "Cash for clunkers" could have the same effect on global warming pollution as shutting down the entire country — every automobile, every factory, every power plant — for an hour per year. That could rise to three hours if the program is extended by Congress and remains as popular as it is now.

Updated: 8:37 PM Study says climate change could hurt insurance companies.

Updated: 8:30 PM Trees can also boost employee performance.

Updated: 6:20 PM Opinions mixed on whether this benefits the economy.

Posted: 5:08 PM Contaminated drinking water has sickened more than 2,600 people in northern China, including 59 who were hospitalized with fevers, diarrhea, stomach aches and vomiting.

Updated: 5:04 PM A review of fuel-economy data has changed the eligibility of 164 trade-in vehicles in the government's "cash for clunkers" program.

Updated: 9:15 PM Utilities are offering more options for customers.

Updated: 9:04 PM Company hopes to use sun's rays in space to power homes.

Posted: 5:58 PM Proposal calls for 30 percent of state's power to come from wind and solar energy.

Posted: 4:18 PM Justin Timberlake celebrated the opening of his renovated, environmentally friendly golf course in style on the 10th tee — by smacking his drive 291 yards.

Updated: 9:06 PM Wind power could replace coal plants' production.

Posted: 2:32 PM Zoo is switching its gas golf carts to solar-electric hybrid ones.

Updated: 9:14 PM Cities produce less pollution, proportionately, than suburban areas.

Posted: 2:30 PM Teachers to study Lake Huron aboard EPA vessel

Updated: 8:58 PM Catholics calling for better monitoring of pollution, climate change.

Updated: 8:28 AM Farmers stand to make more money than they will lose if Congress enacts legislation to limit the gases blamed for global warming.

Updated: 8:27 AM University of Colorado researchers say global warming increases the chances that the Colorado River system's reservoirs could be depleted by mid-century.

Updated: 9:18 AM Excess pollution is harming creatures in the seas.

Updated: 8:52 PM Simple ways to save money.

Updated: 9:19 PM Tips on how to save energy without becoming a pauper.

Posted: 4:55 PM Electric car comes with a hefty pricetag.

Updated: 9:37 AM A new government partnership hopes to reduce energy usage, pollution.