ARIZONA

Former Pennsylvania Sen. Rick Santorum, former Mass. Gov. Mitt Romney, Texas Rep. Ron Paul and former House Speaker Newt Gingrich face off tonight in Arizona for their last primary debate before Super Tuesday. Click here for live coverage of the debate, hosted by CNN, with minute-by-minute updates.

Find out who's moderating tonight's GOP debate, when it begins, where to watch it live and how to follow it on Twitter by clicking here. Former Massachusetts Gov. Mitt Romney, former Pennsylvania Sen. Rick Santorum, Texas Rep. Ron Paul and former Speaker Newt Gingrich face off in Arizona tonight in the last debate before the Arizona and Michigan primaries, the Washington primary, and Super Tuesday.

Of all the issues likely to surface at Wednesday night's Republican debate in Arizona, immigration is a fairly safe bet. That's because Arizona has come to embody the GOP's approach to immigration, in 2010 passing a controversial immigration law that became the model for similar bills passed by Republican-controlled legislatures in Georgia, Alabama, South Carolina and Utah.

Former Louisiana congressman and governor Buddy Roemer announced he has suspended his Republican presidential campaign because the party has turned [its] back on the Democratic process.

Cheers.

Republican presidential hopeful Rick Santorum may be surging in the polls ahead of Mitt Romney just a week before the Arizona and Michigan primaries, but that has come along with intense media scrutiny and the discovery of rather controversial comments.

Scientists have discovered something amazing in space. After analyzing satellite images, scientists have discovered the fastest measured winds to be observed from a stellar-mass black hole.

Rick Santorum continued to defend comments from his past on Tuesday, this time from a 2008 speech about Satan attacking America.

Antibiotic-resistant bacteria fostered in livestock can be transferred to humans, a new study in the journal mBio has shown.

Pinal County, Ariz. Sheriff Paul Babeu resigned his post as Mitt Romney's state campaign co-chair, following the revelation on Saturday that he was involved in a homosexual relationship with a Mexican immigrant who claims he was threatened with deportation if he spoke out about their involvement.

Watch Ben Flajnik vie for parental approval.

Arming Syrian dissidents who are battling a brutal government assault would help to safeguard America's interests in the Middle East, two U.S. senators said.

Rick Santorum is everywhere in the news these days, between his surge in the polls to controversial statements about abortion and President Obama's faith. If he continues to dominate the GOP primary narrative, there's a good chance the former Pennsylvania senator could win the Republican nomination.

Two studies showing how scientists mutated the H5N1 bird flu virus into a form that could cause a deadly human pandemic will be published only after experts fully assess the risks, the World Health Organization (WHO) said on Friday.

A man in the Utah frontier has been breaking into cabins for more than five years, eluding police and stealing off with supplies needed for survival.

CNN was forced to cancel a March 1 pre-Super Tuesday debate when Mitt Romney, Ron Paul and Rick Santorum declined to participate.

Advocacy groups and news sources alike are calling on the Heart Attack Grill to close its doors after one of its patrons suffered an actual heart attack while eating the restaurant's Triple Bypass Burger. Should the grill be shut down, or does the Las Vegas restaurant have the right to stay open? Vote here.

A report this week showing rampant foreclosure abuse in San Francisco reflects similar levels of lender fraud and faulty documentation across the United States, say experts and officials who have done studies in other parts of the country.

Republican critics of a Senate cybersecurity bill want to slow down consideration of the measure, saying it could give government too much power over private-sector infrastructure companies.

A planned March 1 debate of Republican presidential candidates in Atlanta was canceled Thursday after Mitt Romney and Ron Paul dropped out of it and the campaign for Rick Santorum expressed doubt he would attend.

The Beach Boys tour 2012 dates are out!