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This is the amusing moment an awesome optical illusion fish tank made it look as if a cat was inside. The pet-loving owner bought the custom-made glass aquarium for Milo, the Persian feline, and her ...

Everyone loves an optical illusion — even if they leave us completely stumped — and they're all around us in the natural world. From an underwater waterfall in the Indian Ocean to a surrealist scene ...

When looking at this patch of lawn head on, it looks like a sphere just sitting in the middle of the plaza at Paris City Hall. But it isn't. Look at it from the side and you realize that it is just ...