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brazil
25 Sep 2010, 5:22pm
brazil
climate
ecology
rainforest
An undamaged Amazon produces its own clouds and rain
24 Apr 2010, 2:22pm
brazil
dams
hydropower
paraguay
photos
Drowning a Waterfall: The Dam That Powers Two Countries | Quazen
28 Feb 2010, 4:54pm
biofuels
brazil
Technology Review: Searching for Biofuels' Sweet Spot
