Optical illusions occur naturally in different habitats and conditions across the world. Cloud formations can sometimes make it seem like there's an ocean or a UFO in the sky. Whether it is salt flats ...
Green Matters on MSN
Record cold makes Niagara Falls look frozen but science says it's an optical illusion
Experts believe that the falls may have been enshrouded in a frozen blanket, but underneath this blanketing ice, water is ...
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