Sunken WWI sub is leaking TNT into the North Sea

A World War I submarine that sank nearly 110 years ago has been leaking explosive pollutants into the North Sea for decades. What’s more, ocean researchers say the problem may worsen over time—not only near the German vessel itself, but at thousands of similar shipwrecks.On April 19, 1917, Germany’s UC-30 submarine was attempting to return home due to engine problems when it struck a British mine near the Danish island of Rømø. All 27 crew members perished, and th