7 Astonishing Things Seen By Humankind Only Once

Humans have been around for a long time. We’ve seen and accomplished what might be thought of as miracles, but something in our nature doesn’t just let a miracle rest. When an amazing thing happens, we immediately set out to duplicate it. This is seen in how we judge scientific experiments (“Can the results be replicated?”) and is found on playgrounds everywhere. (“I bet you can’t do it again!”)