Tornado seven miles south of Anadarko, Oklahoma, May 3, 1999. OAR/ERL/National Severe Storms Laboratory/Flickr By Dr....
Day: May 23, 2017
An illustration of blood stem and progenitor cells (blue) emerging from hemogenic endothelial cells (purple) during normal...
A Roman Feast, by Roberto Bompiani, late 19th century / Getty Center, Wikimedia Commons By Dr....
Maya mask. Stucco frieze from Placeres, Campeche. Early Classic period (c. 250 – 600 AD) / Photo...
Should have stuck to white … / Creative Commons By Dr. Laurence Totelin / 12.31.2014 Lecturer in...
The SLECO (Socialism, Liberalism, Conservatism and Ecology) chart is a proposed alternative to the Nolan Chart and...