#569 What is the oldest stone circle in the world?
What is the oldest stone circle in the world? Probably the stone circles at Göbekli Tepe, which are almost 12,000 years old. […]
#568 Why don’t we move when we’re dreaming?
Why don’t we move when we’re dreaming? Chemicals in the brain inhibit the motor neurons and stop them from triggering the muscles. […]
#567 What happens in your brain when you learn a second language?
What happens in your brain when you learn a second language? The hippocampus and cerebral cortex get larger. The grey matter in […]
#566 Who owns the North Pole and the South Pole?
Who owns the North Pole and the South Pole? This is a surprisingly difficult question. Technically, no country owns either of them, […]
#565 Why does beer have alcohol?
Why does beer have alcohol? Because the yeast cells in the beer feed on sugar and produce ethanol. Yeast is an egg-shaped […]
#564 What is the Jevons Paradox?
What is the Jevons Paradox? It is that improvements in efficiency of a machine increase the overall consumption of energy by making […]
#563 What is an anchorite?
What is an anchorite? An anchorite or an anchoress were people who were walled into a small cell built into a church […]
#562 Why can blowing up a balloon make you pass out?
Why can blowing up a balloon make you pass out? Because we hyperventilate and have too much oxygen and not enough carbon […]
#561 Are all bones made of calcium?
Are all bones made of calcium? Mammal bones and bird bones are all mostly made of collagen and calcium. Fish bones are […]
#560 What is the difference between short and long-term memory?
What is the difference between short and long-term memory? Short-term memory holds small blocks of information for a few seconds up to […]