http://mentalfloss.com/article/22407/surprisingly-cool-history-ice
http://www.dailykos.com/story/2013/05/27/1212015/-A-Brief-History-of-Ice
http://www.idfa.org/news-views/media-kits/ice-cream/the-history-of-ice-cream
http://inventors.about.com/od/istartinventions/a/IceCube.htm
http://www.newscientist.com/article/dn18949-the-history-of-ice-on-earth.html
http://www.dailykos.com/story/2013/05/27/1212015/-A-Brief-History-of-Ice
http://www.idfa.org/news-views/media-kits/ice-cream/the-history-of-ice-cream
http://inventors.about.com/od/istartinventions/a/IceCube.htm
http://www.newscientist.com/article/dn18949-the-history-of-ice-on-earth.html