At a rally in Centennial, Colo., GOP presidential front-runner Mitt Romney rolled out some new material: the rights given to people by God.

New research indicates excessive consumption of sugar leads to an increase in all kinds of chronic diseases. But how much sugar is too much? Would making sugary foods more expensive help to get consumers to cut back?

Boisjoly was the engineer who boisterously warned about problems with the Challenger's elastic seals. That he couldn't do anything about the launch haunted him and turned him into a crusader for ethics in engineering. Boisjoly died at age 73.

A centrist think tank finds that in several key states, both parties are losing voters relative to the number of newly declared independents. In Colorado, which holds its Republican caucuses Tuesday, declared independents are now about even with registered Republicans or registered Democrats.

While the barrage of negative ads is likely to be bad during the general election, the Republican primaries have seen a confluence of factors that have made for particularly fertile ground for negative ads: the introduction of superPACs collided with a war for control of the GOP between conservatives and hard conservatives.

You could say Tyrieshia Douglas' boxing career began at 16, when she was arrested for street fighting. Now, at 23, Douglas is one of 24 fighters competing for three spots on the first ever U.S. Olympic women's boxing team.

In his new book, Charles Murray, co-author of the controversial The Bell Curve, argues that in an increasingly economically stratified America, the white working class is slipping behind.