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Water samples taken after the spill showed lead concentrations that were 3,500 times the levels normally seen in Durango, Colo.

What killed the dinosaurs? It's history's ultimate murder mystery, and for decades the prime suspect has been a giant asteroid. New data suggest that it struck right before the extinction. But scientists say it still may not tell the full story of what happened to the dinosaurs.

The campaigns of President Obama and Governor Mitt Romney have counted on an army of volunteers who have, among other things, knocked on doors, made phone calls and staffed booths at county fairs and parades in every state in the country.

C. Robert Cargill's new story collection covers the globe and genres of horror from classic to modern, with ghost stories, thrillers, gore and puzzles that would be right at home on premium cable.

Many consumers don't yet understand the label, but grocery stores are now buying from "salmon-safe" farms, which help protect fish by banning pesticides and keeping manure out of the land's waterways.

Last August, 3 million gallons of orange wastewater flooded into Colorado's Animas River, ending up in Lake Powell. But Congress has failed to come up with a way to stop this from happening again.

NPR's Ari Shapiro talks with author Alex Cuadros about his book, Brazillionaires: Wealth, Power, Decadence, and Hope in an American Country.

Native Realities Press exclusively publishes Native American-made comics, graphic novels and games — including a reboot of Tribal Force, widely considered the first all-Native superhero comic book.

The Democratic Congressional Campaign Committee is upping its commitment in the suburban Georgia district, funding three focus groups to test anti-Trump messages ahead of next year's midterms.

A team of arachnologists discovered over 50 new species of spider in Cape York, Australia. Dr. Robert Raven is one of them. He tells Lulu Garcia-Navarro about the expedition and their findings.