On December 12, 1952, the first meltdown of a nuclear reactor occurred in the National Research Experimental (NRX) reactor in Chalk River, Ontario. There were no fatalities or injuries, but radioactive material was leaked into the environment and vented into the atmosphere.
The cleanup took months and involved hundreds, including 150 American military personnel, led by a 28-year-old U.S. Navy submarine lieutenant named Jimmy Carter who was part of the fledgling nuclear submarine program. Disassembling the reactor involved donning protective gear and being lowered into it for only a few minutes at a time to avoid overexposure to radioactivity.
Supposedly, Carter's exposure to radiation was 1000 times what would be considered safe today: it's said that he peed radioactive urine for six months, and his ability to have children in the future was in question.
As it turned out, he had four children, became the governor of Georgia, and then was elected the 39th president of the United States. Following his presidency, he won the Nobel Peace Prize for his humanitarian work. And today, Jimmy Carter turned 100. Not only is he the longest-lived ex-president and the former president with the longest post-presidency, but he's the first president to become a centenarian. Carter has outlived all his predecessors in the Oval Office, and two of his successors. It would appear that the comic books are right: exposure to radioactivity endows you with superpowers.