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Rhode Island

A blacktip shark, above, looks and behaves like a spinner shark. Scientists are tracking spinner sharks to get a clearer idea of the species' whereabouts.

These Shark Look-Alikes Have Long Confounded Fishers and Scientists on the East Coast. Tracking Where They Migrate Could Help Clear the Confusion

Researchers are tagging and tracking spinner sharks to map out their geographic distribution, because they’ve seen that the range of the very similar blacktip shark has shifted

The country’s oldest specialty smallpox hospital in New York City

America's 250th Anniversary

The Oldest Black Church in the U.S., the Wright Brothers’ Home and a New York Hospital Are Among the American Heritage Sites in Urgent Need of Preservation

For its “Irreplaceable America” list in honor of the 250th birthday of the United States, the World Monuments Fund chose endangered historic sites of innovation, creativity and spirituality to publicize and support