Audie Cornish talks with Thomas Haupt, respiratory disease epidemiologist for the Wisconsin Division of Public Health. He's the lead author of the study that helped uncover the source of a mysterious and large uptick in Legionnaires' disease. The study, "An Outbreak of Legionnaires Disease Associated with a Decorative Water Wall Fountain in a Hospital" was published in the online journal Infection Control and Hospital Epidemiology.

The next 40-some weeks or so are going to be a screaming tower of political babble, a cacophony of accusing and boasting, pandering and slandering. I watch the news these days with the mute button permanently depressed, lest I fall into a permanent depression myself. There's only so much contention and vitriol a sensitive soul can bear.

Ever wondered who the big greenhouse-gas emitters are in your neck of the woods? The answer is now just a click away.

The US Environmental Protection Agency today unveiled a new website that identifies most of the nation's biggest emitters of carbon dioxide, methane and other greenhouse gases. It lets you, for example:

Parts of Nigeria are under a 24-hour curfew, after demonstrations against a government policy to end fuel subsidies turned into a fiery rampage in the city of Minna. The BBC reports that "hundreds of rioters set fire to government and political party offices and also targeted the homes of local politicians."

The AP lays out the basics of how we got here:

Did pollsters underestimate the strength of Rep. Ron Paul's New Hampshire support because they didn't include enough younger voters or independents in their samples?

Yes, argues Stefan Hankin, a Washington, D.C. based pollster in a piece on the Campaign and Elections website.

As we've said before, to figure out what the Federal Reserve means when it reports about how the economy is doing and whether policymakers think it's doing better or worse, you need to carefully compare the central bank's latest words to what it has said in preceding months.

U.S.-Pakistan ties are virtually frozen. And now, relations between Afghan President Hamid Karzai and Washington are once again getting frosty.

Over the weekend Karzai surprised the Americans with the demand that the largest U.S.-run prison be turned over to Afghan control much sooner that planned.

It's the latest in a series of announcements by the Afghan government that sometimes appear designed to embarrass and annoy U.S. officials, as well as complicate American plans to withdraw troops from Afghanistan.

Nicotine patches and gums have been helping smokers quit for decades. Right?

Even President Obama, once the Smoker in Chief, has kicked the habit with the help of nicotine replacement therapy, according to his doctor's latest report.

After a third-place finish in New Hampshire, the state he poured his heart and soul into and placed all his bets on, Jon Huntsman doesn't need any more bad news. Just a cursory look at the headlines, and you find they're mostly talking about the end. Even the Christian Science Monitor doesn't mince words, asking, "Is Jon Huntsman toast?"

An explosion in Tehran Wednesday killed an Iranian nuclear scientist while he was driving his car. It's the fifth such death in five years, and Iranian officials immediately blamed Israel. The attack is the latest manifestation of escalating tensions between Iran and the West.