Penned by philosopher Bertrand Russell and endorsed by Albert Einstein, the document warned human beings about the existential threat posed by the new hydrogen bomb.

Most people are aware that Boeing's B-29 Superfortress was the plane that made the first atomic attacks. However, the B-29s delivering America’s first atomic weapons were far from ordinary.

Wilma Betty Gray's WAC journey began when she boarded a train, destination unknown. Her assignment was Oak Ridge, Tennessee, for the Manhattan Project.

While most people are familiar with the names of “Little Boy” and “Fat Man” as the atomic weapons used over Japan, what they may not be familiar with was how different the respective technologies of each bomb were and why this difference mattered. 

Los Alamos and other Manhattan Project Sites developed across the US in 1942 and 1943.

Scientists became political activists in the debate over control of atomic energy.

The combined force of the Hiroshima and Nagasaki bombings was minuscule in comparison to the Tsar Bomba, the most awesome nuclear weapon ever detonated.

75 years after the dropping of the two atomic bombs, join us for a conversation with Gino Segrè, PhD, and Bettina Hoerlin, PhD, biographers of one of the most critical scientists involved in the Manhattan Project.