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.

On Aug. 2, 1939, Einstein signed a letter addressed to Franklin Delano Roosevelt, warning that the Nazis might be developing nuclear weapons ...

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.) ...

Many thanks to Anne Barkworth at the Szilard Library for copies of the dolphin logo and permission to reproduce them. Photo of Leo Szilárd from the Department of Energy Digital Photo Archive.

Dr. Leo Szilard, a Hungarian-born Jewish scientist reputed to be one of the greatest physicists of this century, died at his home here yesterday at the age of 66. Together with the late Dr. Enrico ...

On this day in 1939, a crucial letter was delivered to President Franklin D. Roosevelt that led to the beginnings of the Manhattan Project.

On this day in 1939, a crucial letter was delivered to President Franklin D. Roosevelt that led to the beginnings of the Manhattan Project.

In August 1939, Albert Einstein signed the letter, authored by physicist Leo Szilard, that urged Roosevelt to fund research into the possibility of using nuclear fission as a weapon.