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The day of a successful vaccination – level 1
14-05-1796Smallpox is a very dangerous illness. It kills people. Cowpox is...
The day of a successful vaccination – level 2
14-05-1796Smallpox was a very dangerous disease which killed millions of people....
The day of a successful vaccination – level 3
14-05-1796Smallpox was a deadly and highly infectious disease that had killed...
The day the car was faster than the speed of sound – level 1
15-10-1997Some people like speed. At the end of the 19th century,...
The day the car was faster than the speed of sound – level 2
15-10-1997People are always fascinated by speed. Thanks to the technological progress...
The day a private spaceship flew to space – level 3
29-09-2004X Prize was a space competition announced in 1995. It successfully...
The day people saw the Earth and the Moon together – level 2
18-09-1977Voyager 1 is a space probe that started its journey on...
The day people saw the Earth and the Moon together – level 3
18-09-1977Voyager 1 is a space probe that was launched on September...
The day the Guinness Book of Records was published – level 2
27-08-1955The first Guinness Book of Records was published in Great Britain...
The day the Guinness Book of Records was published – level 3
27-08-1955The first edition of the Guinness Book of Records was published...
