The Surprising History of the 7-Day Week & How and Why Cats Evolved into Pets - SYSK Choice

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How does tickling work? You can’t tickle yourself. But if you are the ticklish type, you’ll start laughing if you know someone is about to tickle you even though they haven’t touched you yet. This episode begins with the weird ways tickling works. http://www.livescience.com/3882-tickle.html You know what is interesting about our 7-day week? It is totally artificial. In other words, the other ways we measure time - such as days, hours, months and years – those are based on the sun, the moon, the rotation of the earth and other things – but the week is just made up. Still, it seems to work very well. Imagine life without the week. Keeping a schedule would be extremely difficult. Here to…