#493 When did globalization start?
When did globalization start? Depending on your definition, either with the Silk Road, the conquest of the Americas, after the Industrial Revolution, since World War II, or when the Soviet…
When did globalization start? Depending on your definition, either with the Silk Road, the conquest of the Americas, after the Industrial Revolution, since World War II, or when the Soviet…
Why did early humans leave Africa? They were probably forced out by climate change, but they could have left because of their rising intelligence. Let’s look at the evidence for…
Do any other animals cry? Yes, but only to lubricate their eyes. We have three types of tears. We have tears that lubricate and clean our eyes. These are called…
Why do soldiers break stride on a bridge? So that the vibrations don’t make the bridge collapse. This rule was introduced by the British Army in 1831. On 12th April…
How do glaciers move? Glaciers are pulled downhill by gravity. A glacier is a river of ice that is flowing downhill. A river is a body of water that flows…
What are the four fundamental forces? The strong force, the weak force, gravity, and the electromagnetic force. The four forces are the fundamental forces that govern everything in the universe.…
Why do some things bounce and other things don’t? Things that bounce have more elasticity than things that don’t bounce. For something to bounce, it has to has to have…
How does a canal lock work? By using gravity to increase the amount of water in the canal and rise the boat. There are two different reasons why canals need…