Photo Essay: United by Independence

The United States is not the only nation that cherishes the anniversary of its birth, nor is watching fireworks the only way to spend the national holiday. From Seoul to Tegucigalpa, countries around the world celebrate their independence with unique and vibrant style.

Seven Questions: Behind the Curtain at the G-8

Planning for a major geopolitical event like the Group of Eight?s annual meeting is a huge, complex undertaking. It helps to have a guide?known as a sherpa?to help bring you to the summit in top shape. Lael Brainard, the Clinton administration?s sherpa in 2000, explains what the G-8 is really like behind the scenes, which leaders to watch this year, and what to expect in Hokkaido.

The Pentagon?s Doomsday Men

Why the Department of Defense needs a lesson in risk management.

The List: The World?s Lost Environmental Causes

A few of what were once considered imminent environmental catastrophes now seem like memories from a bygone era. Whether the problem is solved, the public loses interest, or there was never really much to fear, environmental causes can sometimes simply fade away.

Prime Numbers: Rings of Gold