Do You Know?
1. Do yoga and meditation actually cause internal changes in the brain?
2. If a human could be fed with energy via USB ports rather than food, how long would it take to fully charge an average human being with, say, 1000 or 2000 calories of energy?
3. Do other mammals have blood types like human beings do?
4. In the deep oceans where the pressure may be very high, why are the creatures which have evolved there not simply crushed by the force?
5. How do amateur astronomers discover comets?