ENG: "This could be the end of the world." Truman wrote in his diary after the first nuclear test

Episode 9. On July 16, 1945, shortly before 5:30 a.m., in the New Mexico desert, a new era began. The Americans had successfully tested the atomic bomb. How do those closest to the explosion describe it? What was the coded message to the Secretary of War about the success of the test? How many cases of cancer could the test have caused? Details with radiation expert Steven Simon and historian Michael Neiberg.