[1] http://www.livescience.com/history/prehistoric-city-unearthed-100406.html
[2] http://www.livescience.com/history/prehistoric-city-unearthed-100406.html
[3] http://www.newscientist.com/article/mg20627546.400-pointillist-style-could-bring-lifelike-graphics-to-pcs.html?DCMP=OTC-rss&nsref=tech
[4] http://www.universetoday.com/2010/04/06/newly-discovered-asteroid-will-pass-by-earth-april-8/