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Cyclospora, the parasite that's been wreaking havoc in people's digestive systems over the past month, starts with a single cell. The parasite passes through human intestines to reproduce. Their complex biology contributes to why it's so hard to kick, leading to infections that can last for weeks or months.

Dozens of people who grew up around Philadelphia learned decades later they shared the same biological father, a pioneering infertility doctor. Many bonded, created a family and hold reunions.

What does it take to coordinate the world's response to Ebola? The UN's new Ebola Coordinator explains.

The Atlantic Shark Institute placed a data-gathering tag on a hammerhead shark for the first time. And the encounter off Block Island was caught on video

U.S. Rep. John Larson and his three Democratic challengers squared off in the final debate ahead of the Aug. 11 primary for Connecticut’s 1st District, seeking to draw contrasts on a range of policy issues and how Congress should exert its authority in the Trump era.

The Afrikaners are expected to settle in Vermont before the end of September as a result of an executive order signed last year by President Donald Trump.

Benthic cyanobacteria bloom underwater and appear much more toxic than the kind that float on the surface.

A new show, ‘Overthrow the Citadel!’, reflects the Fall River Museum of Contemporary Art’s mission of connecting working-class youth to a highbrow art world beyond Fall River

"Our grit and our dedication is the one thing that we have control of," Bernthal says. He plays a Spartan king in The Odyssey, and reprises his role as the Punisher in the new Spider-Man film.