Radioactive pollutants can enter the body through ingestion, inhalation, absorption, or injection. The last lesson in a series of 36 introduces pupils to radioactive pollution. They study its sources, both natural and man-made, its...

Timeline of key events in the development of nuclear energy and nuclear weapons, including early scientific discoveries related to atomic science.

Discusses the Manhattan Project of the United States which worked on developing nuclear weapons during World War II. It led to the two atomic bombs that were dropped on Japan in August 1945, ending the war with Japan.

Credited with the creation of the atomic bomb, Robert Oppenheimer opposed the development of the hydrogen bomb. Read about Oppenheimer's education and involvement in the atomic explosions, which "changed the world forever."

Discusses lost nuclear weapons, the power of an atomic bomb, the bombing of Hiroshima and Nagasaki, the development of the atomic bomb, the making of the hydrogen bomb, the detonation of a hydrogen bomb by Russia in 1961, and the status...

This site from Nuclearfiles.org contains a brief biography of Carl Anderson (1905-1991 CE), mentioning his involvement (or lack thereof) with nuclear weapons development.

Here is the story of the first ever atomic bomb, beginning with early scientific ideas, leading up to the success of this weapon.