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After GOP presidential hopeful Rick Santorum triumphed in the Iowa caucuses this week, his stand against birth control and his links to the lobbying industry are coming under scrutiny.

Why would a cat crave mushrooms? A scientist says it's the umami. Though cats can't taste sweetness like people can, they are aces at sniffing out the amino acids that signal protein-rich foods.

Volkswagen has come a long way since it tried to market cars to Americans with the "Fahrvergnugen" slogan. The company has adapted to the U.S. market with bigger, less quirky cars. It seems to have paid off, as sales rose last year in the U.S. — but the company is set on becoming No. 1 worldwide.

The small New England state, which holds its primary on Tuesday, may not be racially diverse. (In fact, it's 93.9 percent white.) But its residents defy stereotypes with their political independence. More voters in the state are registered "undeclared" than Republican or Democrat.

For poor families in the Philippines, electrical bills are a huge burden. But an old soda bottle, filled with water and bleach, can be turned into a 55-watt bulb with the help of the tropical sun.

Japan has long been a friendly place for smokers. Despite tens of billions of dollars in cigarette-related health costs and damages, anti-smoking initiatives have always had trouble gaining traction.

More refugees are fleeing the fighting in Syria. Lynn Neary talks to European Union Commissioner for Humanitarian Aid and Crisis Response Kristalina Georgieva about what officials are doing to help the internally displaced, and those who have fled to neighboring countries.

Kelly Ward, senior software engineer for Walt Disney Animation Studios, was tasked with bringing Rapunzel's locks to life in Disney's Tangled. The hair had to look realistic, but not too real — otherwise Rapunzel would be towing 80 pounds of hair behind her.

Member countries have pledged $430 billion to add to the International Monetary Fund's crisis-fighting arsenal. The aim is to amass enough resources to handle any further problems coming from the prolonged debt crisis in Europe, but the funds come with a few caveats.

Afghan soldiers are taking a more prominent role in the country's security operations, slowly winning the respect of ordinary Afghan citizens. But, the soldiers say, they aren't receiving the same respect or thanks from the government: benefits go missing and proper medical treatment is often scarce.