8 Oct 2026 · 6 min
Episode 49 - Why do tears come out when I cry?
The lost dog finally comes home, and your eyes fill with tears. But you're happy. Why are you crying? Were there tears in your eyes all along? Where does the extra water come from? Why does some roll down your cheeks while your nose starts to run? And why does an onion make tears appear for a completely different reason?






