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1940 - Green Revolution
The Green Revolution refers to a set of research and development of technology transfer initiatives occurring between the 1930s and the late 1960s that increased agricultural production worldwide, particularly in the developing world, beginning most markedly in the late 1960s. -
1951 - UK's National parks
In 1951, National Parks in the United Kingdom were established to conserve natural areas. -
1986 - Chernobyl Disaster
The Chernobyl disaster was a catastrophic nuclear accident that occurred on 26 April 1986 at the Chernobyl Nuclear Power Plant in the city of Pripyat, then located in the Ukrainian Soviet Socialist Republic of the Soviet Union (USSR). -
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Montreal Protocol
It is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. It was agreed on 26 August 1987 and effective in 1989.