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Mitt Romney won Super Tuesday's big prize of Ohio and five other states, but overall results were mixed, with Rick Santorum capturing three states and Newt Gingrich one. Romney won more delegates than Santorum but trailed among core GOP constituencies — Southerners and evangelicals.

As the supernatural enjoys a pop culture resurgence — from vampires to fairy tales — there's also been a firestorm of fascination with dragons, who appear this year in two movies, a new book, video games and a Washington, D.C. museum exhibit. Allison Keyes explores the mystical creatures' appeal.

Momentum behind the tactic has grown ever since a big study showed that people with HIV are 96 percent less likely to pass the virus on if they faithfully take antiviral medicine. Experts call it a "transformational moment" in the course of this epidemic. But many people with HIV still don't know they have it.

The Vatican and the U.S. Conference of Bishops are pushing back against what they perceive as threats to the Catholic Church's core beliefs. While some Catholics are uncomfortable with the changes under way, others say they are overdue.

Haiti is suffering the world's worst cholera epidemic, killing more than 7,000 people since the outbreak began in October 2010. One aid group is pushing for a vaccination campaign. But critics worry about its efficacy — and that it may distract from improving access to clean water and sanitation.

After years of talking about the threat posed by Iran's nuclear program, Israel says the time for action is drawing near. But not everyone shares Israel's assessment, and the United States and others still want to pursue other options to pressure Iran.

Since 2008, controversial changes to state election laws have spread across the nation to restrict voter registration drives, scale back early voting periods or stop people from registering to vote on Election Day. Opponents say the new laws discriminate against minority voters.

It's a good time to be a craft brewer, as Americans are thirsty for full-flavored and local beers. But when small breweries grow, they can also risk losing some of the "craftiness" their fans love. And when they expand, many brewers have to rewrite their recipes — starting with the water.

North Korea's recent hijacking of three Chinese fishing boats has shaken ties between China and its old ally, six months after the death of reclusive North Korean leader Kim Jong Il. Now, some Chinese want their government to take a tough stance with North Korea.

Now the fastest growing voting group, Latinos have never been so heavily courted in a presidential race. They could play a key role in battleground states in the 2012 elections.