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Air Force Gen. Michael Hayden says he consulted both his lawyers and his conscience in approving the National Security Agency's domestic surveillance program. Hayden defended the spying during Senate confirmation hearings for his nomination to be the next director of the CIA.

A growing number of conservative commentators, policymakers and even the president have used the term "Islamofascist" to refer to Islamist extremists. But critics argue that the term offends millions of Muslims by suggesting Islam itself is the enemy.

The House of Representatives begins debate Tuesday on a nonbinding resolution expressing disapproval of President Bush's plan to increase U.S. combat troops in Iraq. The debate could extend through the end of the week.

Occidental Petroleum is investing in billion-dollar projects to suck carbon dioxide out of the sky. The effort is raising hopes — and eyebrows.

People seek out art and music that combine sadness and beauty. Scientists and artists say there's good reason why we're drawn to it.

For her new book, Lisa Taddeo spent nearly a decade immersed in the sex lives of three women. She says desire is one of the things we think about the most, and it's time to talk about women's desires.

Sarah Parcak has found that studying the rise and fall of civilizations has given her hope, or at least some hope. Her new book is called Archaeology from Space: How The Future Shapes Our Past.

Voters in Fort Worth, Texas, and Detroit react to the second night of Democrats debating.

Researchers in Alabama are trying to toughen up baby oysters so they can better withstand predators. It's all part of an effort to restore oyster reefs around the world.

Tens of thousands of protesters marched into Jerusalem and hundreds of thousands took to the streets in Tel Aviv and other cities.