Sam never commend website , especially those gov suffixed , like this -- . But I'm really attracted by this site , what it contains is beyond price --
The USGS, United States Geological Survey is an unbiased, multi-disciplinary science organization
that focuses on biology, geography, geology, geospatial
information, and water. they are
dedicated to the timely, relevant, and impartial study of the landscape,
our natural resources, and the natural hazards that threaten us. The USGS has the best and the brightest experts who bring a range
of earth and life science disciplines to bear on problems. By integrating
our diverse scientific expertise, the USGS is able to understand
complex natural science phenomena and provide scientific products
that lead to solutions.
Atmosphere and climate , earth characteristics , ecology and environment , environmental issues , geographic analysis and mapping , geologic processes , hydrologic processes , natural hazards , natural resources , oceans and coastlines , planets , plants and animals , techniques and methods , water Resources ... all kinds of data and articles you can get free here . OMG , I really orz and love it , just like wikipedia , learning and study will never stop . In China you'll never see such an open resouce and encouraging research .
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