How Big Is a Billion? Millions, billions, trillions and centillions is this film about the long and short scales. No wonder I was always confused as to how many zeroes a billion has. Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Life May Have Existed A Billion Years Earlier Than We Thought! How CO2 Travels Around the Globe and the Effect Trees Have on Reducing It Can The Earth Run Out Of Oxygen? Did Dark Energy Just Disappear? Understanding Why Some People Are Left Handed How Many Smells Can You Smell?