This month marks the 30th anniversary of Chernobyl disaster. It is the worst nuclear power plant accident in history. On 26 April 1986, reactor four suffered a catastrophic power increase, leading to explosions in its core. In the first days after the explosion more than 115 thousand people were evacuated within a 30 kilometers radius. The explosion and fire threw hot particles of the nuclear fuel forming a radioactive cloud on the night of the explosion that covered Ukraine, some parts of Russia and Belarus. The cloud traveled across Europe as well.
Most of the deaths were in Russia, Belarus and Ukraine, though others occurred worldwide throughout the many countries that were struck by radioactive fallout from Chernobyl.