Lost worlds. Secret cities of the A-bomb / directed and written by Jessia Taylor ; series producers, Lucy Van Beek, Ruth Sessions ; produced by Atlantic Productions for the History Channel
Teaming with archaeologists and using cutting edge visual technology, Lost Worlds brings back to life lost civilizations and cultures. Join us on the quest to rebuild what was lost and is now found. Episode: Secret Cities of the A-Bomb: In 1939, a group of scientists--Albert Einstein among them--warned FDR of the possibility that Hitler's Germany might be close to producing an atomic bomb. Roosevelt issued an order--the US had to be the first to develop an atomic bomb.