News Analysis: For Human Spaceflight, Can Measured Beat Bold?

The Obama administration is trying to keep humans flying in space, but will its measured proposals succeed?

John P. Murtha Dies at 77; Ex-Marine Was Iraq War Critic in Congress

The Pennsylvania Democrat served 35 years in Congress and was alternately respected and feared by colleagues.

Jackson’s Doctor Pleads Not Guilty to Manslaughter

Dr. Conrad Murray had provided Mr. Jackson with an anesthetic that was ruled a major factor in his death.

Dow Closes Below 10,000 for First Time Since Nov. 4

The Dow Jones industrial average dipped below the 10,000 threshold as investors sought to overcome fears of a faltering global recovery.

Iran’s Nuclear Plans Prompt New Calls for Sanctions

After Iran notified the U.N. nuclear agency of plans to enrich its uranium, officials from the U.S., France and Russia called for stronger measures against Tehran.

Risks, and Perhaps Rewards, in Obama's Health Summit

The president's proposed summit raises expectations, and questions, in Washington.

Ukraine Opposition Leader Appears to Win Election

Prime Minister Yulia V. Tymoshenko refused to concede the presidential election to Viktor F. Yanukovich.

After the Parade, Saints Face Many Decisions

The Super Bowl champion Saints have 29 free agents — 11 of them unrestricted — heading into next season.

All Workers Accounted For in Connecticut Blast

No one else was believed to be buried in the rubble of a power plant that exploded Sunday, leaving the death toll at five, the mayor said.