... But then, in 1937, there came something no less thrilling: the announcement that a new element had been created — an element that seemingly did not exist in nature. The element was named "technetium," to emphasize that it was a product of human technology ...

...When Glenn T. Seaborg and his colleagues at the Lawrence Berkeley National Laboratory in California were able to make a new element in 1940 with 94 protons in its huge nucleus, they could not at first imagine that anything more massive would ever be obtained, and so they called their new element "ultimium" (later it would be renamed plutonium) ...