Surprise thread

Picking a journey…

If nothing happens, choose one below.

• How did glass become clear enough to see through?
• Why do we dream at night?
• Why do maps always leave something out?
• Where did the alphabet come from?
• Why did inventing zero change mathematics?
• How did sugar remake the modern world?
• Why does the week have seven days?
• Why does the modern workday run on coffee?