Altogether, fallout from Chernobyl was registered in all of the Northern Hemisphere. The only places that were affected enough to affect human health was in Europe and the Soviet Union. The US, Canada, and Japan all set up monitoring services to check Students and Tourists from USSR and Western and Eastern Europe. The Chernobyl accident, combined with the effects of the Three Mile Island incident, put an end to the development of nuclear power plants. Since 1979 no new nuclear power plants have been built, causing the eventual diminishing of nuclear power.

The destroyed Reactor No. 4 at Chernobyl isolated from the environment with steel and concrete ("The Sarcophagus").