Map Of Science is a good idea , this is still incomplete, low resolution! and also complex!, but good start for having a whole body visualization for science!
http://farm1.static.flickr.com/82/430561725_4eb7bc5d8a_o.jpg
http://mapofscience.com/
Another Effort is
http://users.fmg.uva.nl/lleydesdorff/map06/index.htm
Other Work is
http://seedmagazine.com/news/2007/03/scientific_method_relationship.php
Or Simply
http://www.google.com/search?hl=en&q=%22map+of+science%22
roozbeh sanaei
cellular and molecular bioengineering, national university of singapore