http://sedac.ciesin.columbia.edu/ offers a multitude of (mostly global) geospatial data sets for various topics such as agriculture, climate, conservation, governance, natural
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FetchClimate2
http://fetchclimate2.cloudapp.net/ is a Microsoft Research project that facilitates access to climatological (and other geographical) data by a comfortable web interface.
Continue readingTime and space
http://world.time.com/timelapse/ features multitemporal images of various locations to illustrate the effects of human activity on the environment. For example, using
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