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By Ben Tavener, Senior Contributing Reporter

RIO DE JANEIRO, BRAZIL – The UN's Rio+20 Earth Summit has ended with broad agreements and a general “renewing of commitment” to sustainable development, greener economies and the eradication of poverty, after delegates from nearly 200 member countries approved the text of the 53-page official Outcome Document on Friday.

However many details concerning specific targets and goals have yet to be finalized, and some see the outcome of the

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