Scientists from Boston University say they have found the genetic signature of longevity. After analyzing the genes of the world’s oldest people (1,000 who lived over 100) the scientists say that they have found variations in the genes that contribute to a longer life. Though the trait is complex, scientists hope that they will be able to predict an individuals inclination to a longer life. For example, a gene called FOX03A can triple the changes of a person living past 100. In total the study found that there were 150 unique genetic variations that, when put together, boost a chance of fighting off the wear and tear of age.