http://genetics.thetech.org/original_news/news10
https://en.wikipedia.org/wiki/Ageing
http://www.todayifoundout.com/index.php/2014/05/age/
http://www.senescence.info/aging_theories.html
http://www.techinsider.io/do-astronauts-age-slower-than-people-on-earth-2015-8
http://www.thatsreallypossible.com/immortality/
http://www.livescience.com/6967-hang-25-year-wait-immortality.html