Is there a limit to how intelligent a single person can be?
Do stairs go up or go down?
Do fish have a thirst for water?
When did time actually begin?
Can you cry underwater?
Why is it so difficult for women to apply mascara with their mouths closed?
Why does the sun make our hair lighter but make our skin darker?
Why do you think are manholes round?
Why do you think are blueberries not bright blue?
Is your time truly wasted if you enjoy wasting it?
What’s the color of the mirror?
When Greenland is white and ice-covered, why is it called Greenland?
Which orange came first: the color or the fruit?
How many pennies do you think would fit into this room?