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The day the most famous formula was published – level 1
27-09-1905In 1905, Albert Einstein is a young man. He works for...
The day the most famous formula was published – level 2
27-09-1905In 1905, Albert Einstein was a young man. He worked for...
The day of the Space Shuttle Columbia disaster – level 3
01-02-2003On January 16, 2003, six American astronauts and one Israeli boarded...
The day of the tragedy in Armero – level 3
13-11-1985Nevado del Ruiz is a volcano in Columbia. On November 13,...
