Why Do Some Organs Come In Pairs? We all have two of certain organs, like kidneys and lungs, but why not multiple hearts, livers or brains? Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts A rocket just reached 100 km altitude and landed back safely on its feet! This Is What A Happy Brain Looks Like Will We Ever Make Ironman? The Mystery Flaw of Solar Panels USB POWERED SHOES? How Big Can a Human Being Get?