Or: how Andrei Sakharov became an anti-nuclear bomb activist!

Andrei grew up in a family of scientists, and after WWII, contributed to developing nuclear weapons for the USSR. Horrified by the devastation in Hiroshima devastation, he became disenchanted by his work when Stalin sent him to a secret base for nuclear research. During the Cold War, Khrushchev pushed him to create "Tsar Bomba," the biggest bomb ever. Sakharov struggled with the moral implications of his work, especially the human costs, and began to openly criticize Soviet policies and nuclear weapons. Today, he is remembered not only as a scientist, but also as a defender of human rights who won the Nobel Peace Prize.