Everybody's Uncle Sam: here's the inside story behind one of America's most honored symbols

Article Abstract:

Uncle Sam has been a symbol for the United States for well over a century. The symbol was first drawn by cartoonist Thomas Nast in the 1870s, and the original namesake was Sam Wilson, an American patriot, first in the Revolutionary War and later as the head of a meat-packing business.

Uncle Sam (Nickname)

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Atlantis destroyed!

Article Abstract:

The Greek philosopher Plato wrote at around 400 B.C. about the wealthy island of Atlantis that sank because of strong earthquakes. Several theories about the probable causes of the sinking of Atlantis are presented.

Geographical myths, Mythical places, Atlantis, Lost continents

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We did it! We found gold!

Article Abstract:

An underwater robot named Merlin is being used to recover treasure. The robot can go where humans cannot survive. Found treasure includes gold, coins, pearls and other valuable objects.

Innovations, Discovery and exploration, Robots, Underwater exploration, Treasure-trove

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