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The human brain may be just three pounds of jelly. But it turns out that jelly is very organized. New scanning techniques show that the brain's communications pathways are laid out in a highly ordered three-dimensional grid that look a bit like a map of Manhattan.

If the Supreme Court strikes down the health overhaul law, what happens to the people who have benefited already? Here's a roundup of some answers to questions raised by the historic arguments.

Some employees, the audit found, worked seven days in a row without the required 24 hours off.

Eight years ago, Martin saved his father from a fire. His untimely death never gave Tracy Martin a chance to pay his son back.

The plea from the former superintendent of the Upper Big Branch coal mine in West Virginia is a key step in the effort to seek criminal charges further up the corporate ladder at Massey Energy.

Each day seems to bring more questions about the case of Trayon Martin, an unarmed black teen was shot to death in Florida. Martin was killed by a white Latino neighborhood watch captain. Some say that while guns are at the heart of the issue, community policing groups need more regulation.

Trayvon Martin's parents have been going public to bring attention to their son's death over a month ago. Melissa Block talks with two mothers, Annette Nance-Holt and Candace Lightner, who also spoke out publicly after the death of their children. Nance-Holt helped start a group called Purpose Over Pain and Lightner founded Mothers Against Drunk Driving.

Filmmaker James Cameron has just returned from a successful submersible expedition to the deepest spot in the ocean — and he's also gearing up for the 3-D rerelease of his 1997 epic, Titanic. Cameron says that for him, filmmaking and exploring are two aspects of the same basic impulse.

The killings of three Jewish children, a rabbi and three soldiers of North African descent by an Islamic extremist came during a presidential campaign in which immigration dominated election rhetoric. While some Muslims say they fear a backlash, and Jews have been shaken by the tragedy, there has also been an outpouring of outrage and solidarity.

Wisconsin holds its Republican presidential primary on Tuesday. As in earlier nominating contests, Mitt Romney and a superPAC supporting him have massively outspent rival campaigns.