There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
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Pierre Jaquet-Droz, a watchmaker, 240 years ago invented a robot that could write, and the parts could be interchanged to say whatever you want.
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Leonardo da Vinci could write with one hand and draw with the other at the same time.
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An African Baobab tree in South Africa, known as Big Baobab, has a circumference of 154 feet and even has a bar inside the trunk that can fit 60 people.
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