Besides Brazil's tough conservation laws, there are now countless projects, often backed by multilateral agencies, to develop sustainable forestry, eco-tourism and other means of providing a living for the region's inhabitants without harming their environment.

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She reminds us that this is how change happens -- not mainly through the exploits of the famous and the powerful, but through the countless acts of often anonymous courage and kindness and fellow feeling and responsibility that continually, stubbornly, expand our conception of justice -- our conception of what is possible.

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Computer makers, for example, often sell many different models, in countless configurations, in part so that it is hard to compare their machines with those of rivals.

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