You mean you didn't know about it?
On a map of the world, he has animated a time lapse of all the nuclear bombs exploded from 1945 in New Mexico, through Hiroshima and Nagasaki, and then everywhere else, up to 1998. The image is compelling, as are the statistics. 2,054 explosions conducted by seven countires. Over half of them by the United States, and a huge percentage of those on our own soil. (Hint: you might want to steer clear of Nevada for the next few thousand years.) Russia came in second, of course. Want to guess who's number three? If you said China, bzzt, you're wrong. The correct answer is France.
Be sure to stick with the video to the end. The true cumulative effect does not become clear until the last minute when a recap is done one country at a time and you can sense the scale of what happened. It startled me to note that the Soviet Union appears to have trashed itself from one end to the other.