Japanese artist Isao Hashimoto's "1945-1998" is an animated map showing the 2,053 nuclear explosions that took place around the world during the 20th century, from the detonations at Alamogordo, Hiroshima and Nagasaki in 1945 to the tests conducted by India and Pakistan in 1998.
The month and year are displayed in top right corner, and the number of nuclear explosions for each country appear next to the flags in the margins. The total is displayed in the bottom right corner.
The numbers reveal that, on average, 1 nuclear explosion occurred every 9.6 days during the 54-year period, with the greatest activity in 1958 and 1962.
The time map does not include the two nuclear tests conducted by North Korea in October 2006 and May 2009, nor does it include the dozens of subcritical nuclear tests (explosions that do not produce a sustained nuclear chain reaction) conducted in recent years by the US/UK and Russia.