G8 members offer a mixed picture on meeting Kyoto Protocol targets. The United States continues to refuse ratification.

As the United States looks to reform its health care system and expand access to the uninsured, countries that have moved toward universal health care may offer lessons.

Damage to Japan’s Fukushima Daiichi nuclear power plant has reignited debate over the safety of nuclear power and highlighted questions over aging power plants, safety procedures, and waste disposal…

The UN conference on climate change that begins December 7 in Copenhagen is supposed to produce new targets for emissions reductions, but experts say major countries are at odds on the ultimate goal …

China’s anti-satellite test in January drew international condemnation but also piqued interest in some quarters about instituting a space weapons ban.