Geography 331:  Environments of the Past
Links

Data Sources
NOAA Paleoclimatology Program -- includes data archives and educational materials
US Global Change Research Program
NASA's Directory of Earth Science Data and Services
Oak Ridge National Laboratory -- data archive of global change data, with emphasis on carbon cycle
Global Historical Climatological Network
Mauna Loa CO₂

Journals (may require individual or institutional subscription)
Nature
Science
Climatic Change
Geology
Global and Planetary Change
Holocene
Journal of Quaternary Science
Palaeo³
Quaternary International
Quaternary Science Reviews
Quaternary Research

Scientific Organizations
American Association for the Advancement of Science
American Geophysical Union
Ecological Society of America
Geological Society of America
International Geosphere-Biosphere Programme
National Academy of Sciences
USGS

Climate Change
US Global Change Research Program
RealClimate

Droughts and Aridity
National Drought Mitigation Center
NOAA Paleoclimatology