Key portions of the Kyoto Protocol are set to expire at the end of 2012. But many of the world's major greenhouse gas emitters have already set national targets to reduce emissions, and they're forging their own initiatives to meet those goals.

At the E.U. summit in Brussels, Britain was the only nation to rule out treaty changes aimed at saving eurozone countries from default and saving the euro. A look at what's behind Britain's latest show of euro skepticism — and what it means for the Tory Prime Minister David Cameron, who, ironically, is in a coalition with the pro-Europe Liberal Democratic party.

European leaders pulled an all-nighter in Brussels and came up with an agreement mandating stricter fiscal and financial discipline in their national budgets. But Britain did not sign on. In any case, the arrangement is fuzzy on enforcement. For the short term, the summit leaders agreed to inject cash into a credit line for the International Monetary Fund and other measures they hope will stabilize financial markets, keep debt-ridden nations from default, and save the euro as the common currency.

Lynn Neary speaks with Stephen Hoch, professor of marketing at the Wharton School in Philadelphia, about the use of mobile technology in retail.

The U.S. has poured $28 billion of economic assistance into Egypt in recent decades. But now when Egypt's needs are the greatest, the U.S. and Europe are cash strapped. The Obama administration is trying to quickly reprogram aid to make sure it helps bolster democratic forces in the country and creates jobs to help ease the country's transition. The International Monetary Fund's chief Christine Lagarde says her door is open as well, but countries like Egypt need to ask for aid, which does come with some conditions. Meanwhile, leading members of Congress say the U.S. has to also start imposing conditions, particularly on U.S. military aid.

The case of a former FBI agent who disappeared from an Iranian resort island nearly five years ago has come back into the headlines. His family has decided to tell the media, for the first time, about some developments in the case that occurred last year — including a video of the former agent, Robert Levinson, who is shown asking the government to work for his release. NPR's Dina Temple-Raston talks to Lynn Neary about the questions surrounding the case and the family's efforts to bring Levinson home.

Mexico's military recently dismantled phone networks that drug cartels were using in northern Mexico to assist with their smuggling operations. A number of telecommunications workers have been kidnapped in the past couple of years and were presumably forced to build these networks.