Republican Sen. Lindsey Graham of South Carolina pulled out of negotiations to forge a climate bill, protesting what he called a "cynical ploy" by Democrats to focus instead on immigration.
Sen. John Kerry said Saturday that "regrettably, external issues have arisen that force us to postpone" advancing the climate bill that was to be unveiled on Monday.
The explosion at an oil rig in the Gulf of Mexico is no reason to give up plans to expand offshore drilling, White House spokesman Robert Gibbs said.
The lethal explosions this month in a West Virginia coal mine and on a Gulf of Mexico drilling platform have served as reminders that the energy industry remains a dangerous endeavor, despite advances in safety and environmental practices.
Seeking to comfort the families of 29 workers killed at a West Virginia coal mine, President Obama was to deliver on Sunday a eulogy that voiced concern for the lost miners and determination to ensure the safety of those in the mining industry.
Governors of six East Coast states, including Massachusetts' Deval Patrick, have teamed up to urge U.S. Interior Secretary Ken Salazar to support Cape Wind, the controversial wind farm proposed for Nantucket Sound.
Opponents of nuclear power formed a 75-mile human chain between reactor sites in Germany Saturday to protest against government plans to extend the power plants' operation.
As the world struggles to break a deadlock in climate negotiations, South Africa and three other influential developing nations are gathering for a strategy session to ensure poor countries are heard.
Indonesia has launched an ambitious plan to tap the vast power of its volcanoes and become a world leader in geothermal energy, while trimming greenhouse gas emissions.
Electric vehicle infrastructure firm Better Place said on Saturday it has reached a deal to work with Chery Automobile, China's largest independent car maker and exporter, on new technology for the Chinese auto market.