The U.S. government has boosted spending on international broadcasting since 9/11, expanding its reach to the Internet and satellite TV. But critics say these outlets have lost their focus.

Debating global warming policy has moved to the top of agendas worldwide, but some skeptics still question whether action is necessary or possible.

President Barack Obama says he will seek vigorous climate-change policy. Efforts to curb greenhouse gases pose considerable economic pitfalls, as well as opportunities.

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