From NPR News

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.

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?"

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.

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.

When Pope Benedict XVI goes to Latin America in March, Mexico is an obvious choice with nearly 100 million Catholics.

But communist-run Cuba is also on his itinerary. The 84-year-old pontiff does not travel often, and this leg of his trip will be a strong show of support for Cuba's church leaders and their growing role in pushing President Raul Castro's government for change.

More than anywhere else in Cuba, the Santa Rita church in Havana's Miramar district is the place where religion and politics intersect.

As we noted earlier, all the candidates today are in South Carolina, and it did not take long before the gloves came off. As Ron previewed earlier, the hardest punches came in relation to Mitt Romney's business ventures.

We've looked around for what the candidates are saying at their different campaign stops. Here's a roundup, which we'll add to as the candidates make more stops:

Since the 2008 presidential campaign, many Washington watchers have advocated for an Obama-Hillary Clinton ticket. New York Times columnist Bill Keller says swapping Biden for the popular Secretary of State is the best way for President Obama to ensure re-election.

Take the number 2. Put 15 zeroes behind it, as Space.com says:

2,000,000,000,000,000

Now, think about the news from this story at that website:

When you think of your orange juice in its infancy, you probably envision neat rows of leafy green citrus trees in Florida or California — Tropicana and other companies' have helped seal that image in our minds.

But the reality is that a lot of our orange juice comes from Brazil — about 14 percent, according to the U.S. Department of Agriculture.

Just before he left office this week, outgoing Mississippi Gov. Haley Barbour (R) issued more than 200 pardons or sentence reductions — including more than a dozen to persons convicted of murder, manslaughter or other death-related crimes. And that has sparked outrage and calls for changes in the law that gives the state's governor such authority.

The list of Barbour's executive orders in the last four days before his departure from office on Tuesday is posted here.

Rick Santorum, Newt Gingrich and Rick Perry all hope to derail Mitt Romney's front-runner status in the South Carolina primary. Former South Carolina Rep. Bob Inglis joins NPR's Ken Rudin for a preview of the Palmetto State primary.

In his book, Justice and the Enemy, British journalist William Shawcross says the Nuremberg trials of Nazi leaders after World War II created a template for the trial of future war crimes. He considers the case of Khalid Sheikh Mohammed, the alleged mastermind of the 9/11 attacks, who's being held in Guantanamo prison and will be tried in a military commission.

In December, Ethiopian troops seized the city of Beledweyne, in Western Somalia, from al-Qaida-linked terrorist group al-Shabab, in an attempt to weaken their influence in the country. The decision to increase international presence in Somalia has raised serious questions among analysts about the effect armed intervention will have on the region.

Social media has become a huge part of how people experience the web. So it's not surprising that Google's move to integrate "personal results" into its web searches — drawing from a user's Google+ profile — wasn't praised by the folks who run rival social networks.