Unit 1: Many Planets, One Earth // Section 10: Further Reading
University of California Museum of Paleontology, Web Geological
Time Machine, http://www.ucmp.berkeley.edu/help/timeform.html.
An era-by-era guide through geologic time using stratigraphic
and fossil records. Science Education Resource Center, Carleton
College, "Microbial Life in Extreme Environments,"
http://serc.carleton.edu/microbelife/extreme/index.html. An
online compendium of information about extreme environments and
the microbes that live in them. James Shreve, "Human Journey,
Human Origins," National Geographic, March 2006,
http://www7.nationalgeographic.com/ngm/0603/feature2/index.html?
fs=www3.nationalgeographic.com&fs=plasma.nationalgeographic.com.
An overview of what DNA evidence tells us about human migration
out of Africa, with additional online resources.