I think that as long as we put parameters of what we say needs to be present for life to exist we will restrict are selfes from finding life. Who is to say that life might not have other needs what if a other beeing needed to breath hydrogen/ Co2  and exhaling oxygen or giving birth in water and at somepoint tranfering to land all in one lifespan or breathing helume or if to live you need to be in a radioactive atmosphere  in my mind all these things need to be considered.i have been learning of Sara for about 2 years now and come to learn she is very well respected in her field and now I learn She's a Canadian I would like to know more of her bio and her personal life like where she grew up and her education.