This web page contains an activity to track the position of the sun at different times during the year. Participants create their own sundials and mark the location of the sun’s shadow over a period of time. An...

This mineral database, fro Pierre Perroud of the University of Geneva, contains mineral lists, mineral pictures, and mineral links. It includes a search option to locate minerals by name, elements in formula, or type...

Initiated in 1992, the primary goal of the Atlas Florae Europaeae (AFE) Database project is to make plant distribution data available in digital format. Currently, AFE includes "preliminary maps for all European vascular...

This atlas presents an inventory of intact forest landscapes (i.e. the remaining large, unbroken areas of pristine nature within the forest zone of Russia). This endeavor was carried out by a group of Russian...

Housed at the Cooperative Institute for Meteorological Satellite Studies (SSEC) at the University of Wisconsin - Madison, the atmospheric emitted radiance interferometer (AERI) "measures downwelling infrared radiation...