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The day of the first nonstop flight across the Atlantic – level 2
20-05-1927In 1919, a New York businessman announced a competition. He promised...
The day of the first nonstop flight across the Atlantic – level 3
20-05-1927In 1919, businessman Raymond Orteig announced a competition. He promised to...
The day the Eiffel Tower opened – level 3
06-05-1889When a competition for the dominant structure of the world exhibition...
The day HIV was discovered – level 3
23-04-1984In 1981, five men from Los Angeles were reported to have...
The day the human DNA was mapped – level 1
14-04-2003In 1990, scientists begin a special project. They want to map...
The day the human DNA was mapped – level 2
14-04-2003In 1990, scientists began a project with the goal of mapping...
The day the human DNA was mapped – level 3
14-04-2003In 1990, scientists started a project with the goal of mapping...
The day the first person reached the North Pole – level 3
06-04-1909For many years, people believed that the first man to conquer...
The day the first nonstop flight around the world started – level 3
26-02-1949On February 26, 1949, a special plane with a 14-member crew...
The day the world saw the first cloned sheep – level 3
22-02-1997Dolly was a sheep born on July 5, 1996. At first...
