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Until now, estimating how old a dinosaur was when it died has been a fairly simple process: Count up the growth rings in the fossilized bones. But new research into some of dinosaurs' living relatives, like crocodiles, suggests that this method may not always work.

A new NPR/PBS News/Marist poll finds a jump in disapproval of the agency among Democrats and independents, but Republicans are standing by ICE and the president.

Cutting back on ready-to-eat meals won't be easy, and whole milk may make a comeback. One thing that's certain: It'll be a while before the new guidelines trickle down to schools.

Hundreds of federal agents are leaving from Minnesota, poll finds a jump in disapproval of ICE among Democrats and Independents, the last major arms control treaty between Russia and the U.S. expires.

The Oscar-nominated Iranian screenwriter Mehdi Mahmoudian was arrested after condemning the regime's crackdown on protesters, which director Jafar Panahi says represents the actions of a "failed state."

The Olympics are a symbol of international cooperation and peace. The U.S. was once seen as a bastion of that order, but historians say Trump's America enters this year's Winter Games with a very different image.

A month after Maduro's ousting, Venezuela's interim leader walks a tightrope between U.S. demands and Chavista hardliners expectations.

New Jersey voters head to the polls for one of the year's first congressional primaries. WNYC's Mike Hayes discusses the special election for the House seat left open by now-Gov. Mikie Sherrill.

Are the world's superpowers back in an arms race now that the new START treaty has expired? NPR's Leila Fadel speaks with arms control expert Rose Gottemoeller.

The last major arms control treaty between Russia and the U.S. will expire on Thursday.