Drought

CoCoRaHS Interactive Map with Daily Precipitation
http://www.cocorahs.org/Maps/ViewMap.aspx?state=usa

Community Collaborative Rain, Hail, and Snow Network
http://www.cocorahs.org/

Drought: The Creeping Disaster
http://earthobservatory.nasa.gov/Features/DroughtFacts/drought_facts.php

Earth’s Ecological Systems: Understanding Biological, Geological, and Chemical Factors Involved in the Earth’s Biogeochemical Cycle and How These Earth System Cycles Are Impacted by Climate Changes:

The Biogeochemical Cycle: http://en.wikipedia.org/wiki/Biogeochemical_cycle

Biogeochemical Gas or Sedimentary Cycle: https://files.nyu.edu/pet205/public/biogeochem1.html

The Water or Hydrologic Cycle: http://ga.water.usgs.gov/edu/watercycle.html

Earth Labs: Drought Unit Overview
http://serc.carleton.edu/eslabs/drought/index.html

4 2 eXplore: Drought
http://www.42explore2.com/drought.htm

Planning for Drought
http://www.drought.gov/portal/server.pt/community/planning/211/planning_home/356

The National Drought Mitigation Center
http://drought.unl.edu/DroughtforKids.aspx

The U.S. Drought Portal
http://www.drought.gov/portal/server.pt/community/education/212/drought_for_k-12_and_above/318

Tree Rings, Climate Change, and the Rainy Season
http://cleanet.org/resources/42774.html

Understanding Drought: Training Module
http://www.drought.gov/portal/server.pt/community/drought.gov/202/understanding_drought