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For centuries, people thought sap had to flow down a tree's body through a spigot at the bottom. But researchers have discovered that sap can flow upward, too, which allows syrup production from much younger trees, and could even turn maple syrup into a row crop.

With the presidential campaigns underway, one of the questions commonly asked around Kabul is whether the election will be held at all this year. If it is, there are a handful of candidates who are likely to come out ahead.

Karachi is Pakistan's economic hub, its major port and its largest city. It's also the country's most violent and crime-ridden city. But it's not all blood and thunder. Witness the musical Grease, now playing to packed houses in Karachi.

An NPR poll finds that just 7 percent of Americans say concussion risks are too great to continue offering football as a high school sport.

Viktor Yanukovych, who announced he was going on sick leave last week, says he will return to work on Monday. But the opposition plans to step up protests.

Neither the Seahawks nor the Broncos are among the top NFL teams when it comes to political contributions, but they're still plenty active.

The actor, whose repertoire includes an eclectic array of challenging roles, won a best actor Oscar for the title role in the 2005 film Capote.

A reproductive health think tank says the recent surge of state laws intended to restrict the procedure is likely not the reason. Instead, it cites the economy and long-acting contraceptives. But there's also a wild card.

All season long, it's been a convivial scene at Washington's Penn Quarter sports bar, where fans of the Denver Broncos cheered their team alongside fans of the Seattle Seahawks. The question is, what will happen there on Super Bowl Sunday, when the two teams face off?

The 29-year-old from Park City, Utah, will compete on the U.S. Olympic team in Sochi this month. What it took to get there is more than she ever imagined.