Why tickling makes us laugh - Deepstash

Why tickling makes us laugh

From a historical perspective it is ironic that tickling in the modern era is considered to be a way to bond for parents and their children because a few centuries back tickling was a form of punishment.

Thanks to evolution laughter became a way for people to enjoy each other's company without any danger or injuries.

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MORE IDEAS FROM What's the point of laughter? - BBC Science Focus Magazine

Laughter as a method of bonding

Laughter is a form of social bonding because it is contagious and allows us to show that we are non-threatening.

We laugh when we see or hear something funny. We laugh to show that we are being silly.

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Many anthropologists believe that language existed and evolved in the past few thousand years, but there is evidence suggesting that laughter arose from millions of years ago because we share the same structure of laughter with the great apes.

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Coffee beans are first softened in hot water or steam. Then caffeine is dissolved from the beans by using a solvent such as methylene chloride, ethyl acetate, or a gentler solvent such as water itself.

Liquid carbon dioxide is a much more expensive alternative, but has the added advantage that it does not remove the flavour molecules.

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The Annual Cycle
  • Spring is when seeds and roots start to grow. It is often wetter and warmer but not as hot when summer comes.
  • Summer is the time when the temperature has the ability to reach its hottest and when forest fires are more frequent.
  • Autumn is when the temperature cools down again, plants become dormant, and it is when animals prepare for hibernation in the winter.
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Saltwater: The Reason An Ocean Is Salty

Ocean water is full of mineral salts which enter through the rivers, passing through rock and soil. Water has a property of evaporation whereas salt does not, so a lot of salt is left behind.

Oceans are saline throughout the world, but the Mediterranean Sea is saltier. Many oceans are less salty due to the regular mixing of fresh river water.

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