Abstract: Any claims for evidence of life on other worlds have the potential to be transformative events in human history. ccordingly, any such claims will be met with intense scrutiny from the scientific community. This will be particularly true for claims for evidence of life on exoplanets-planets around other stars-for which we will only have remote-sensing data and no ability to grab a piece of that world and put it under both literal and figurative microscopes. The data upon which these claims wil…