Scientists Find Megadiversity at Top of Amazon Forest

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A Carnegie Institution botanist in the Peruvian rainforest begins his 45-meter climb to collect foliage from the tree canopy. (Jake Bryant)

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Tree climbers in the Amazon use rope ladders, bridges and towers to get to the canopy and move from canopy to canopy once they are up there. (Greg Asner)

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A Carnegie Institution tree climber high in the canopy. (Greg Asner)

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The view of the Amazon forest looking down from the tree top. (Greg Asner)