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  • Bloom, Paul. "How do morals change?" Nature. March 25, 2010. (July 12, 2010) http://www.nature.com/nature/journal/v464/n7288/full/464490a.html
  • Ehrlich, Paul R., and Levin, Simon A. "The Evolution of Norms." PLoS Biology. June 14, 2005. (July 12, 2010) http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.0030194
  • Futuyma, Douglas. "Natural Selection: How Evolution Works." ActionBioscience.org. December 2004. (July 12, 2010) http://www.actionbioscience.org/evolution/futuyma.html
  • Mayell, Hillary. "Oldest Human Fossils Identified." National Geographic. February 16, 2005. (July 13, 2010) http://news.nationalgeographic.com/news/2005/02/0216_050216_omo.html
  • McAuliffe, Kathleen. 'They Don't Make Homo Sapiens Like They Used To." Disocver. February 9, 2009. (July 13, 2010) http://discovermagazine.com/2009/mar/09-they-dont-make-homo-sapiens-like-they-used-to
  • Owen, James. "Future Humans: Four Ways We May, or May Not, Evolve." National Geographic. November 24, 2009. (July 12, 2010) http://news.nationalgeographic.com/news/2009/11/091124-origin-of-species-150-darwin-human-evolution.html
  • PBS. "Is Love in Our DNA?" (July 12, 2010) http://www.pbs.org/wgbh/evolution/sex/love/index.html?fy
  • PBS. "Where We Came From." (July 12, 2010) http://www.pbs.org/wgbh/evolution/library/faq/cat02.html
  • Shreeve, Jamie. "Oldest Skeleton of Human Ancestor Found." National Geographic. October 1, 2009. (July 12, 2010) http://news.nationalgeographic.com/news/2009/10/091001-oldest-human-skeleton-ardi-missing-link-chimps-ardipithecus-ramidus.html
  • Shute, Nancy. "Where Is Human Evolution Heading?" U.S. News & World Report. July 24, 2008. (July 12, 2010) http://www.usnews.com/science/articles/2008/07/24/where-is-human-evolution-heading.html
  • Smithsonian National Museum of Natural History. "Fact Sheet. David H. Koch Hall of Human Origins." March 17, 2010. (July 13, 2010) http://www.mnh.si.edu/press_office/releases/2010/HO_press_kit/Evolutionary_Milestones_Fact_Sheet.pdf
  • Smithsonian National Museum of Natural History. "Homo sapiens." (July 13, 2010) http://humanorigins.si.edu/evidence/human-fossils/species/homo-sapiens
  • Smithsonian National Museum of Natural History. "Introduction to Human Evolution." (July 12, 2010) http://humanorigins.si.edu/resources/intro-human-evolution
  • Than, Ker. "'Key' Human Ancestor Found: Fossils Link Apes, First Humans?" April 8, 2010. (July 13, 2010) http://news.nationalgeographic.com/news/2010/04/100408-fossils-australopithecus-sediba-missing-link-new-species-human/
  • Wade, Nicholas. "Still Evolving, Human Genes Tell New Story." The New York Times. March 7, 2006. (July 12, 2010) http://www.nytimes.com/2006/03/07/science/07evolve.html