In 1996, countries with nuclear capability signed the Comprehensive Test Ban Treaty. Though this has not yet been enforced, the last tests by the United States, the United Kingdom and Russia were ...

A new map has revealed the terrifying spread of radioactive fallout from US nuclear tests, showing the contamination in 46 ...

The most powerful U.S. weapon ever tested, the TX-21 "Shrimp" bomb, unleashed 15 megatons of explosive power during the "Castle Bravo" test at Bikini Atoll in the Marshall Islands on March 1, 1954.

The third most powerful test took place earlier in 1962, with a yield of 21.1 megatons. Much like the other very high-yield Soviet bomb tests, Test 147 was detonated in the air over Novaya Zemlya ...

The first atomic bomb test took place 78 years ago this Sunday — July 16, 1945 — and opened the door to the dangerous nuclear arms race the world has seen ever since. J.

On the morning of that date in 1954, the United States carried out Castle Bravo, the first-ever trial of a deliverable hydrogen bomb, on a man-made island in Bikini Atoll in the mid-Pacific ...

The study also reanalyzed fallout from all 93 aboveground U.S. atomic tests in Nevada and created a map depicting composite deposition of radioactive material across the contiguous U.S.

The first atomic bomb test in New Mexico on July 16, 1945, opened the door to the dangerous nuclear arms races we have seen ever since. J. Robert Oppenheimer, a leader in the Manhattan Project that… ...

The world's first atomic bomb was tested in New Mexico in 1945, where hundreds of locals are still facing fallout from the test. Many are also fighting for compensation from the federal government.

FILE - The first U.S. atom bomb explodes during a test in Alamogordo, N.M., July 16, 1945. The cloud went 40,000 feet in the air, as viewed by an automatic camera six miles away from the site. (AP ...