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frog wearing umbrella Photo by Penkdix Palme -- National Geographic Your Shot - A two inch frog shelters itself from the rain in Jember, East Java, in Indonesia.

Bottle Design Brain Melter: The Handle is the Spout, the Opening is on the Bottom, the Inside and the Outside Are the Same Surface

Klein bottle If you want to give a mathematician something to try to wrap their head around, a Klein bottle is a good place to start. A real Klein bottle is an object with no inside and no outside.

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The Horizon System offers future transportation with quick journey time using aircraft -

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