Fresh Air Weekend highlights some of the best interviews and reviews from past weeks, and new program elements specially paced for weekends. Our weekend show emphasizes interviews with writers, filmmakers, actors, and musicians, and often includes excerpts from live in-studio concerts. This week:

Rick Santorum is officially the winner of the Jan. 3 Iowa Republican presidential caucus. The state Republican Party reversed itself from a previous assertion that it would not declare one, given problems at eight precincts, as The Des Moines Register reported.

In a news release late Friday, the party said it called the race "in order to clarify conflicting reports and to affirm the results released Jan. 18 by the Republican Party of Iowa."

The album Little Spark evokes a sound you might have heard 40 years ago, piercing through the static of your AM radio. The big string sections and angelic choruses are all there, echoing the hallmarks of classic orchestral pop. But Little Spark is the work of a modern singer-songwriter named Jessie Baylin.

When the U.S. Department of Justice and the FBI shut down the web site Megaupload yesterday, there were many responses, from outrage to confusion to applause, and nearly as many questions. One that stood out was simple: If Megaupload provides a service that can be used for legal pursuits, are they legally responsible for the users who use it to illegally share copyrighted material?

Javier Sicilia is a novelist and a poet. In 2009, he was awarded Mexico's prestigious Aguascalientes National Poetry Prize. This September, he read a poem dedicated to his son, Juan Francisco, at a rally:

President Juan Manuel Santos announced late last year that he was liquidating Colombia's troubled intelligence agency, and the country, he said, knew exactly why.

The Administrative Department of Security, or DAS, had been mired in scandal by reports of agents illegally wiretapping government critics and selling classified information to drug lords.

Despite a furious lobbying effort by the Catholic Church, the Obama administration today said it won't weaken new rules that will require most health insurance plans to offer women prescription contraceptives at no additional out-of-pocket cost.

Saturday's South Carolina Republican primary may be the last good chance for Massachusetts Gov. Mitt Romney's challengers to stop his march to the nomination. Every election year since 1980, the winner of South Carolina's Republican primary has gone on to win the nomination.

Food is getting elbowed out of the discussion on climate change, which could spell disaster for the 1 billion people who will be added to the world's population in the next 15 years. That's the word today from scientists wondering why food and sustainability get such short shrift when it comes to thinking about how humans will adapt to climate change.

Blending melodic, powerful, guitar-driven indie rock with hook-filled pop and Coldplay-style balladry, Scottish band Snow Patrol has become an international sensation with heavy touring, chart-topping albums and beautiful singles. In 2003, Final Straw vaulted the group onto the international music scene.