On September 11, 2001, 19 men hijacked four commercial jets, intentionally crashing them into the World Trade Center and the Pentagon.

Hillary Clinton speaks with Jamie Rubin about human trafficking.

Get a firsthand look at the lives of smuggled migrants in this photo essay.

Get a visual overview of India's water problems in our photo essay.

Learn more in our Five Controversial Dams about the issues involved in other dam projects around the world.

People in Pyongyang are well fed, relatively speaking. They have decent housing and access to good education and so forth. Most of the rest of the country is not like that.

Photos essay of North Korea