Informazione su studi post-laurea negli Stati Uniti - Information on Ph.D. studies in the USA
Education Index of 2013
The Education Index at PhDs.org is the Internet’s premier source of updated, clear educational data about undergraduate and graduate programs in the United States.
Above: Darwin's sketch of the "tree of life" from one common origin. The cross-bars stand for extinction, note also that change is not conceived having a direction or as being "progress". And notice Darwin's words at the top, "I think..." (Photo from a copy at the Darwin Exhibition, Bari Feb. 2010 - Photo C. Colacino).
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last partial update March 9, 2013 (All non-working links at that date have been updated or erased)