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The day penicillin was discovered – level 1

28-09-1928

Alexander Fleming is from Scotland. He wants to help people. He...



The day penicillin was discovered – level 2

28-09-1928

Alexander Fleming was a Scottish microbiologist. He wanted to discover a...



The day penicillin was discovered – level 3

28-09-1928

Alexander Fleming was a Scottish microbiologist. He wanted to discover a...



The day the most famous formula was published – level 1

27-09-1905

In 1905, Albert Einstein is a young man. He works for...



The day the most famous formula was published – level 2

27-09-1905

In 1905, Albert Einstein was a young man. He worked for...



The day the most famous formula was published – level 3

27-09-1905

In 1905, Albert Einstein was a young man working for the...



The day Stanislav Petrov saved the world from the apocalypse – level 1

26-09-1983

Stanislav Petrov saves the world in 1983. On September 26, 1983,...



The day Stanislav Petrov saved the world from the apocalypse – level 2

26-09-1983

Stanislav Petrov saved the world in 1983. On September 26, 1983,...



The day Stanislav Petrov saved the world from the apocalypse – level 3

26-09-1983

Stanislav Petrov saved the world in 1983. On September 26, 1983,...



The day the first European saw the Pacific Ocean – level 1

25-09-1513

Vasco Nunez de Balboa is from Spain. He travels to Central...