The 15 megaton Castle Bravo test conducted by the US in 1954 was the largest nuclear explosion ever at that time and caused a radiological disaster, alerting the world about the dangerous consequences of nuclear weapons testing. This raised global public opinion about the need for limiting or eliminating nuclear weapons and shifting towards peaceful means to settle disputes between nations.
The Castle Bravo nuclear test in 1954 was an over the top explosion and a radiological disaster that sparked global concern, as fallout spread more than a hundred miles away and affected people's health even outside the safety zone, with Japan being significantly hit by the catastrophe. The test brought public attention into the global nuclear race as a spectator audience, concerned about the impact of potential nuclear weapon use and testing on humanity and the planet.
Bertrand Russell and Albert Einstein, along with other scientists, issued the Russell-Einstein Manifesto in 1955, which appealed directly to global public opinion and aimed to get powerful governments to agree to allow their citizens to live without fear of war.