20 Shocking Facts You Didn’t Know About Your Own Body

20. We Can See For 30 Miles

Our eyes will never be as powerful as an eagle’s. Still, the human eye is so sensitive that, if the earth were completely flat, we could clearly see a flickering candle up to 30 miles away. 19. Our Nerve Impulses Run At 250 MpH
20. We Can See For 30 Miles