Szilard campaigned for a demonstration bomb test in front of the Japanese ambassador to give them a chance to surrender. He was horrified that it was instead dropped on a city.

Szilard studied in Berlin with Einstein and Max Planck, among other notable scientists. According to Lanouette, he fled Germany with Einstein to avoid Nazi persecution.

Szilard, a stocky man of 28, had first impressed Einstein six years earlier by proving him wrong on a certain scientific point. (That didn’t happen often.) ...

Leo Szilard, pictured circa 1945, circulated a petition to other Manhattan Project scientists, asking President Truman to reconsider using the atomic bomb on Japan.

Szilard and his fellow Hungarian-born physicist Eugene Wigner both expressed their agreement with Einstein's statements, according to The New York Times. The Manhattan Project is the center of a ...

Huang: Leo Szilard was a physicist who conceived of the nuclear chain reaction, and over the course of working on the Manhattan Project, he became increasingly concerned about dropping this weapon ...

A mushroom cloud towers over Nagasaki after the detonation of an atomic bomb in 1945. Albert Einstein struggled with his role in the creation of the bomb and the devastation wrought by the U.S ...

Szilárd develops geophysical models to infer the history of planetary interiors and surfaces from spacecraft observations. This has included his search for sub-surface oceans within Saturn's icy ...