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The day the lowest temperature was recorded on Earth – level 1
21-07-1983The coldest temperature on Earth is -89.2 degrees Celsius. People measure...
The day the lowest temperature was recorded on Earth – level 2
21-07-1983The lowest temperature ever recorded on Earth was on July 21,...
The day the lowest temperature was recorded on Earth – level 3
21-07-1983The lowest temperature ever recorded on Earth was on July 21,...
The day the first human stepped on the Moon – level 1
21-07-1969The US and the Soviet Union are big rivals in the...
The day the first human stepped on the Moon – level 2
21-07-1969In the 1960s, the US and the Soviet Union were big...
The day the first human stepped on the Moon – level 3
21-07-1969In the 1960s, the Soviet Union and the US were rivals...
The day of the Tunguska Event – level 1
30-06-1908It is June 30, 1908. A big explosion happens in Siberia....
The day of the Tunguska Event – level 2
30-06-1908On June 30, 1908, one of the biggest and most mysterious...
The day of the Tunguska Event – level 3
30-06-1908On June 30, 1908, one of the largest and most mysterious...
The day people started to make the deepest hole – level 1
24-05-1970The deepest hole made by people is in Russia. The name...
