The famous pack mules that carry supplies and people in and out of the Grand Canyon have back pain, as you might imagine. One man is on a mission to make the lives of these beasts of burden a little less painful.

When Rene Noriega retired a few years ago after a long career as a Border Patrol agent, he took what — for him — was the next natural step.

Today, The Huffington Post released what it says is a never-before-seen video of the Space Shuttle Challenger disaster.

Famously, Harold Camping, the founder of Family Radio, blanketed the country last year with warnings on bilboards and pamphlets that the world would end on May 21.

Campaigning in Mississippi on Friday, Mitt Romney took a pre-emptive swipe at a new 17-minute video about President Obama to be distributed next week by Obama's re-election campaign.

"The Road We've Traveled" was created by filmmaker Davis Guggenheim, who won an Academy Award for the 2006 Al Gore climate-change documentary, An Inconvenient Truth.

The question hanging over Washington for months has been this: Will Israel strike the Iranian nuclear program?

The Obama administration seems to have bought some time this week after rounds of meetings and speeches with Israeli officials in Washington.

Still, the president assured Israeli Prime Minister Benjamin Netanyahu that the U.S. will do all in its power to prevent Iran from acquiring a nuclear weapon.

So the military option is still on the table.

You might be tempted to chuckle about some Norwegian researchers peering back at experiments done during the '60s and '70s with LSD as a treatment for alcoholism.

But don't.

Their rigorous analysis, combining data from six different studies, concludes that one dose of the hallucinogenic drug might just help.

Anthony Hopkins has been knighted by Queen Elizabeth II, and has played Richard I, Richard Nixon, monarchs, statesmen, geniuses and heroes. He won an Academy Award playing one of the most notorious movie villains in history: Hannibal Lecter, the criminal cannibal with an affinity for Bach. Now, Hopkins is making his own music.

Coal mining company Genwal Resources has pleaded guilty to corporate criminal charges stemming from the 2007 Crandall Canyon mine collapse in Utah that left nine miners and rescuers dead.

Federal prosecutors say a plea agreement includes a provision that no criminal charges will be filed against any individuals in the case.

Federal and congressional investigators blamed the an initial mine collapse on "retreat mining," in which pillars of coal holding up the roof of the mine are dug out, causing collapse of the mine behind them.