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To find more on El Niño, go to the USGS Web site and search for El Niño:
http://marine.usgs.gov/
NOAA Paleoclimatology Program and World Data Center for Paleoclimatology:
http://www.ngdc.noaa.gov/paleo/treering.html
Ohio State University, Byrd Polar Research Center:
http://www-bprc.mps.ohio-state.edu/Icecore/front-page.html
Polar Ice Core Paleoclimatology Research Group.
Department of Anthropology, National Museum of Natural History at the Smithsonian Institution:
http://www.nmnh.si.edu/anthro/archaeobio/
Visit for more on the history of plants, animals, and human interaction, at this site for their Archaeobiology program.
Cahokia Mounds:
http://www.cahokiamounds.com/cahokia.html
The USDA Pollen Website:
http://pollen.usda.gov/index.htm
Who knew pollen was so beautiful? Includes interesting microscopic images of pollen as well as information about the types of research that can be carried out on pollen.
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