When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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If Earth's history was condensed into twenty-four hours, life would've appeared at around 4am, land plants at 10:24pm, dinosaur extinction at 11:41pm, and human history would’ve began at 11:58:43pm.
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In the case of an emergency, a Crayola crayon can be used as a candle and will burn for about 15 minutes.
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Lack of water is the #1 trigger of daytime fatigue.
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In one day, adult lungs move about 10,000 litres of air.
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