History

#439 When were pencils invented?

When were pencils invented? The first pencil was invented in 1565. It is easy to think that something as simple as the pencil has been around for eons, but that is not actually true. Graphite was discovered in 1565, and the very first pencil was made very shortly after. Before pencils were invented, people used

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#438 Why are katana blades curved?

Why are katana blades curved? They are curved to make them more efficient at cutting. Katana are long, curved swords from Japan. Their name “katana” means one-sided blade. “Kata” means “side” and “na” means blade. Many swords are double-sided because it allows them to be more effective when thrust. They can also be used to

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#406 Who invented the skateboard?

Who invented the skateboard? The skateboard was invented so that surfers could keep surfing when the sea was flat and there were no waves.  So, who invented surfing? Surfing has been around for thousands of years. Fishermen in ancient Peru fished in kayaks made of reeds and they surfed them back to shore when they

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