Before the Space Race began there was a chemistry race - the hunt for new elements. The Russians may have organised the periodic table but it was the Americans that began filling in the blanks. These heavy elements could not be found in nature, you had to create them in cyclotrons and reactors. Chemistry World journalist and author, Kit Chapman, tells Dr Karl about the people behind the 20 or so unpronounceable names at the bottom of the table. In this podcast we count up from atomic number 93. Who wrote a personal letter to Stalin urging a soviet atomic program ? What was the Frankenstein-like moment in San Francisco (just before Pearl Harbour) that changed the war? Which superhero prompted the raid on the offices of DC Comics ?