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Chernobyl: 35 Years Since Nuclear Catastrophe
26 Apr
Summary
- The 1986 Chernobyl disaster remains the worst nuclear power plant catastrophe.
- Radioactive fallout contaminated over 200,000 square kilometers, primarily in Ukraine, Belarus, and Russia.
- International Day of Remembrance honors victims of radiation accidents and disasters annually.

Thirty-five years ago, on April 26, 1986, the Chernobyl Nuclear Power Plant experienced the world's most devastating nuclear catastrophe. A series of explosions and a fire in Unit 4 released approximately 14 exabecquerels of radioactive material, contaminating a vast area.
This disaster rendered over 200,000 square kilometers uninhabitable, with Ukraine, Belarus, and Russia bearing the brunt of the contamination. Immediate evacuations resettled over 116,000 people from the surrounding exclusion zone.
Following the accident, a sarcophagus was constructed to contain the damaged reactor. The event prompted the establishment of the International Day of Remembrance of the Victims of Radiation Accidents and Disasters, observed annually on April 26.
Investigations placed blame on plant management and personnel. According to UN reports, initial high radiation doses affected around 600 plant workers, with many suffering severe health consequences. The incident's long-term human and environmental impact remains a significant global concern.