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By using observations of a well during a summer solstice he figured out the circumfrence of the world.
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Pytheas worked out a way to determine latitudes and using astronomical measurments proposed that tides were influenced by the moon.
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Beginning in the 13th century the climate again began to cool and the North Atlantic began to clog with ice forcing the Viking colonies to not be able to move into the new territories they had found.
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Prince Henry established a Marine observatory to improve the Portugese sailing endeavers and conquered one of the greatest trades-problems getting around the tip of Africa.
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The cape of hope was finally rounded by Bartholomeu Diaz in 1486.
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Successful in finding the best spice route for Portuguese
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Famous explorers who is credited in discovering America.
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Circumnavigated the globe through a passage called The Straight of Magellan
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He mapped the Gulf Stream.
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Cook discovered Hawaiin group and determined the outline of the worlds largest ocean. Cook was also the first person known to cross the Atlantic circle.
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Published many famous papers including Natural Selection and the Origin of the Species
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Made a system to help sailors avoid catstrophic weather issues, currents, and waves.
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First large voyage with the purpose to find out more about ocean life and chemical, physicals properties of the ocean.
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Sailed westward out of Greenland and discovered the Baffin Islands.
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Eric's son Leif Erickson discovered what then was called Vineland which is now called Newfoundland.
