A blind American man taught himself to navigate using echolocation. His hobbies include hiking and mountain-biking, and he has now trained over 500 students in his ‘tongue-click’ technique.
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Putting your car alarm remote under your chin or beside your head increases its range.
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There's a regenerative candle that creates a new candle as it melts.
20
In Montreal, there's a bus stop with swings that play musical notes when you swing on them.
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The Rain Man (Laurence Kim Peek) was the only savant known to science who could read two pages of a book simultaneously - one with each eye.
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