10 – sloths - http://www.livescience.com/27612-sloths.html
 9 – stone age -  http://www.ancient.eu/Stone_Age/
8 – first joke -  http://uk.reuters.com/article/uk-britain-joke-life-idUKL129052420080731
7 – translate pets - http://abcnews.go.com/Technology/talking-dog-technology-ready-hit-market/story?id=22680323
http://www.theatlantic.com/technology/archive/2013/06/animal-behaviorist-well-soon-have-devices-that-let-us-talk-with-our-pets/276532/
6 – silence - https://www.reddit.com/r/explainlikeimfive/comments/1ixn1n/eli5_what_is_the_ringing_noise_we_hear_when/
https://en.wikipedia.org/wiki/Silence
5 - https://www.quora.com/What-would-happen-to-Earth-if-the-moon-split-in-half
https://au.answers.yahoo.com/question/index?qid=20100823084956AA4omQN
4- https://au.answers.yahoo.com/question/index?qid=20131012071319AAbBZLr
3 - http://www.runnersworld.com/run-longer/overview-how-to-run-for-60-minutes
2 - https://www.avforums.com/threads/if-a-snake-was-to-eat-its-tail-how-far-could-it-get.640253/
1 – worm - http://animals.mom.me/differences-between-red-wrigglers-earthworms-6358.html