There's a regenerative candle that creates a new candle as it melts.
20
In major cities like Brooklyn and London, there are fake townhouses that hide subterranean chimney vents, emergency subway exits, and more. Camouflaged in plain sight, they normally go unnoticed within their architectural surroundings.
13
A man with locked-in syndrome, named Jean-Dominique Bauby, wrote an entire book by blinking his left eyelid.
11
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.
17