South America faces energy shortfalls at the same time that several countries have nationalized energy resources. Experts say a lack of cooperation on energy policy could hinder regional economic gro…

Despite their deep economic ties, animosity between China and Japan periodically resurfaces over territorial, historical, and economic disputes.

Party caucuses, which date to the 1800s, have declined in importance but they could be decisive in choosing the 2008 Democratic presidential candidate.

Despite foot-dragging on climate change, the United States has a strong history of environmental legislation, which could provide models for future greenhouse gas reduction efforts.

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.