SciQuery - Directory of Math & Science- Earth Sciences

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The Earth's Atmosphere
The present atmosphere of the Earth is probably not its original atmosphere. Our current atmosphere is what chemists would call an oxidizing atmosphere, while the original atmosphere was what chemists would call a reducing atmosphere. In particular, it probably did not contain oxygen.
http://csep10.phys.utk.edu/astr161/lect/earth/atmosphere.html - [ Site Details ] [ Report This Site ]

Wikipedia - Earth's Atmosphere
is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen and 21% oxygen, trace amounts of other gases, and water vapor. This mixture of gases is commonly known as air.
http://en.wikipedia.org/wiki/Earth's_atmosphere - [ Site Details ] [ Report This Site ]

Globally-Averaged Atmospheric Temperatures
Includes graphs and Data sets from the Global Hydrology and Climate Center.
http://www.ghcc.msfc.nasa.gov/MSU/msusci.html - [ Site Details ] [ Report This Site ]

Encyclopedia of the Atmospheric Environment
The Encyclopedia is a one-stop source of information, for younger and older users alike, on a range of atmospheric issues, including air quality, acid rain, global warming and ozone depletion.
http://www.ace.mmu.ac.uk/eae/ - [ Site Details ] [ Report This Site ]

HexDex Directory
General human-edited web directory of quality websites.

Qettle Web Directory
Human-edited web directory of high quality websites.

Zeoma Directory
Web directory offering regular and featured submissions.

UnaDir Directory
Human-edited web directory that is neatly organized and searchable.