The first alarm clock could only ring at 4 a.m.
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Future biotechnology could be used to trick a prisoner's mind into thinking they have served a 1,000 year sentence in only eight hours, a group of scientists have claimed.
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Energy is being wasted if a toaster is left plugged in after use.
21
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
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The ball on top of a flagpole is called a 'truck'.
24
There are only 14 blimps in the world.
69