The headings under 'encylcopedia' are just taken from the Open Directory Project. They should be changed to better reflect what is in the encylopedia. I think less links under community are needed. Perhaps an about the project page could include all the relevant links rather than having them on the home page. For a green version, see the history.
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... the Parana[?] with its impressive Iguaçu[?] falls, the Rio Negro, Săo Francisco[?], Xingu, Madeira and the Tapajós[?] rivers.
Situated along the equator, Brazil's climate ...