Nation

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Terence Smith speaks with Jeremy Hudson of the Clarion-Ledger in Jackson, Miss., the reporter who broke the story about a military unit in Iraq refusing to go on a dangerous mission.

U.S. forces stepped up operations Tuesday across a wide swath of the Sunni insurgent strongholds northwest of Baghdad, pounding targets in two cities from the air and supporting Iraqi troops in raids on mosques suspected of harboring insurgents.

"Superman" actor Christopher Reeve, who became paralyzed after a horse-riding accident nine years ago, died Sunday from heart failure. Jeffrey Brown takes a look at the actor-turned-advocate for spinal cord and stem cell research.