Tag: science

How Do You Know If Your Money Is Fake?

How Do You Know If Your Money Is Fake?

If you’re living in Mesopotamia in 3000 BCE, how do you buy things? There are no cards, no ATMs no cash of any kind… bartering was a valuable part of any exchange, until the invention of international trade, and then money. Money has been made of grains, shells, livestock, beads, and finally precious metals. The …

TEDxBoston – Noah Wilson-Rich – Urban Beekeeping

TEDxBoston – Noah Wilson-Rich – Urban Beekeeping

Translator: Bob Prottas Reviewer: Ivana Korom Now that your minds are open I would like to tell you my goal for this talk. Which is to change your perspective on many things. How about this for one? (Laughter) This man is wearing what we call a “Bee Beard.” A beard full of bees. Now this …

How is money made?

How is money made?

(phone ringing) – Hi, it’s Doug. Here in the United States, where I live, money is always dark green, like this. But in other countries, money comes in a lot of different colors. This is one of my favorites. It’s money that used to be used in the Netherlands. Look how colorful that is. Or …