Agricultural Biodiversity Weblog



Luigi Guarino and Jeremy Cherfas aim to include on this blog, nuggets of information on anything that relates to agrobiodiversity, and welcome contributions from others.
The American Mathematics Competitions (AMC) is the most prestigious mathematics competition for high schools and middle schools. The program leads the nation in strengthening the mathematical capabilities of the next generation of problem-solvers.
(202) 387-5200
Address
MAA Headquarters
Mathematical Association of America
P.O. Box 90973
Washington DC, 20077
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Astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, and more. 
(877) 246-4835
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Geography.com is about this science in our world.  The site is a collaboration between the American Association of Geographers and Esri. 
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The website of Lockheed Martin Corporation, an American aerospace, arms, defense, information security, and technology corporation with worldwide interests.
(301) 897-6000
Address
Lockheed Martin Corporation
6801 Rockledge Dr
Bethesda
MD 20817
USA