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NOVA | Nazi Attack on America

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Preview A sunken German U-boat off the coast of New Orleans tells the story of Operation Drumbeat.

Watch Wednesday, June 22, 2016 at 9pm on WMHT-TV​

Long before 9/11, a far deadlier, little-known attack from the ocean depths struck our shores, lasting three-and-a-half years and claiming 5,000 lives. Now, famed undersea explorer Bob Ballard, discoverer of the Titanic, investigates the wreck of one of the attack craft, a German submarine that lies at the bottom of the gulf just a few miles off New Orleans. U-166 was part of Operation Drumbeat, a highly successful U-boat operation that caught East Coast cities and shipping almost completely unprepared. With state-of-the-art survey gear, Ballard probes the wreck and explores a dramatic mystery in the official story of the sub’s sinking.

Phylogenetic trees can tell us where medical problems come from, and how to fight them.

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Boxer Crab Fights off Pufferfish

Episode 2, “Survival” premieres Wednesday, May 2 at 8 p.m. on PBS (check local listings) The boxer crab has an extraordinary method for self defense: it wards off...

Cannibal Wall Lizards in Greece

Episode 1, “Hunger Wars” premieres Wednesday, April 25 at 8 p.m. on PBS (check local listings) On the Greek island of Parthenos, a dense population of wall lizards...

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Five Reasons to Eat Insects

Save room for bugs! They're the future of green cuisine.