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When paleontologist Martin Qvarnström began peering inside 230-million-year-old fossilized dinosaur dung using an advanced X-ray technology, he wasn’t sure he’d see anything of interest.

By Zachary Small and Julia Jacobs The most expensive dinosaur fossil ever sold at auction, a stegosaurus that the billionaire Kenneth C. Griffin bought over the summer for $44.6 million ...

Researchers have conducted the largest study ever on - all right, brace yourself - dinosaur poo. Yeah, no, it sounds a little messy. But as NPR's Geoff Brumfiel reports, the findings may shed new ...

On August 28, 1963, more than 250,000 people gathered in the nation’s capital for the March on Washington for Jobs and Freedom. The march was the brainchild of longtime civil rights activist and labor ...

17.3 April 1951 The Nation's Mental Health 18:21 ...

Today marks the 50th anniversary of the 1963 March on Washington for Jobs and Freedom. The event is most famous for the "I Have a Dream" speech delivered by Martin Luther King Jr. from the steps ...

Here’s how it works. The most expensive dinosaur fossil ever sold at auction is now on public display at the American Museum of Natural History (AMNH) in New York City. "Apex," is a Stegosaurus ...

According to scientists who maintain that dinosaur extinction came quickly, the impact must have spelled the cataclysmic end. For months, scientists conclude, dense clouds of dust blocked the sun ...