Ongoing Impact of Nuclear Testing (IMAGE) Columbia University Caption The United States used the Marshall Islands as a testing ground for 67 nuclear weapon tests from 1946 to 1958, causing human and environmental catastrophes that persist to this day. Credit World Future Council Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.