When We Tested Nuclear Bombs

Since the time of Trinity - the first nuclear explosion in 1945 - nearly 2,000 nuclear tests have been performed, with the majority taking place during the 1960s and 1970s. When the technology was new, tests were frequent and often spectacular, and led to the development of newer, more deadly weapons.

But starting in the 1990s, there have been efforts to limit the future testing of nuclear weapons, including a U.S. moratorium and a U.N. comprehensive test ban treaty. As a result, testing has slowed, though not halted.

Here are images from the first 30 years of nuclear testing.