Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
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Scientists have developed a 'hangover-free' beer that has electrolytes, making it more hydrating and refreshing.
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The Gate Tower Building skyscraper in Japan has a highway passing through its fifth, sixth and seventh floors.
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Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
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There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
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