Today's Wednesday Wonder is the ambitious data visualization "Charting Culture", which maps 2,600 years of cultural history, from 600 B.C. to 2012. Background about the project is provided at The Creators Project.
Allison Abbott, "Humanity's Cultural History Captured in 5-Minute Film", Nature, July 31, 2014
Maxmilian Schich, Chaoming Song, et al., "A Network Framework of Cultural History", Science, August 1, 2014 (Full text of the research report is available.)