The team used a large random sample of projects, comparing those with a biodiversity or conservation component to those without. In other words, they used a control group – the researchers believe theirs is the first large-scale study of this kind to take this approach. Other analyses, in contrast, have used a case study approach. "We were inspired to do this because we feel that conservation will not succeed if large populations of poor people have as their only recourse logging forests or clearing land to eke out a living," said Kareiva. "So there needs to be serious attention given to poverty alleviation and conservation at the same time."…
A few of the tubes that send water to the turbines at Itaipú dam (hydroelectric power plant) on Paraná river that flows through Braziland Paraguay. Shot by Wutzofant, Wikimedia Commons, under the terms of the GNU Free Documentation License, Version 1.2
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