Microsoft co-founder Paul Allen bought a copy of Einstein's infamous 1939 letter to Roosevelt in 2002. It just sold at ...

However, the Manhattan Project truly took off after Nobel Laureate Albert Einstein penned a letter to US President Franklin D ...

The scientist warned the US president that Germany might be able to develop an atomic weapon A letter from Albert Einstein ...

Albert Einstein's 1939 letter to President Franklin D. Roosevelt, warning of Nazi nuclear advancements and urging U.S. atomic ...

This letter, which played a pivotal role in the development of the atomic bomb, was originally addressed to the US president.

The letter warned that Germany could develop "extremely powerful bombs" using uranium and urged the president to "speed up" the US's own work on the element, eventually leading to the Manhattan ...

The original letter, which reached the desk of US President Franklin D. Roosevelt in 1939, ultimately contributed to the ...

Though Einstein was never a part of the Manhattan Project — the US Army Intelligence Office denied him the necessary security clearance — the Nobel Prize winner regretted his role anyway.

The scientist warned the US president that Germany might be able to develop an atomic weapon A letter from Albert Einstein warning the US ...

eventually leading to the Manhattan Project and the development of the world's first atomic bomb. Though Einstein didn't write the letter, his worldwide esteem meant his signature added ...