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Lake sturgeon have been around since the dinosaurs, and they can live as long as humans, or longer. Overfishing and pollution has decimated populations, but biologists are learning to help them breed.

Historic sites around the world face mounting threats: war, climate change, natural disaster. There's a rush to use 3D scans for preservation. But experts have questions about how the scans are used.

After more than 100 days of often-violent street protests, there's little sign of peace returning to Venezuela, as President Nicolas Maduro prepares a plan that critics call a power grab.

Now that the U.S. is out of the Iran nuclear deal, Secretary of State Mike Pompeo is laying out his next steps. He wants European countries to work with him to pressure Iran on its other bad behavior, but the Europeans are fuming about Trump's decision to walk away from the nuclear deal.

As Hollywood and China grow closer, more roles are opening up for Asian-American actors to play Chinese-speaking characters. But before they can sound fluent on screen, some turn to dialect coaches.

Health workers have made some large strides against polio but getting to zero is elusive. There's violence against workers and anti-vaccination advocates use social media to frighten parents.

David Greene talks to fashion journalist Colin McDowell about this weekend's royal wedding. McDowell has written about royal style for decades.

Ukraine is considered one of the world's most corrupt countries. But activists are encouraged by the ongoing case against Roman Nasirov, the country's tax chief, who is accused of embezzlement.

The Republican Party is set to adopt a platform with reliably conservative positions, even as the country has moved in a liberal direction.

The GOP primary to replace Jason Chaffetz in Utah's 3rd Congressional District includes a candidate embracing many of Trump's positions and another who didn't vote for the president last year.