It would be easy to think that the rainforest was saved, or at least, that the destruction of the Amazon rainforest is no longer one of the great crises facing a planet finally reaching consensus on the issue of global warming.

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Efficiency is the most important response to the many challenges facing the planet during the next century and beyond, including: global warming or any other form of climate change.

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The world is facing many challenges such as global warming, diseases and pollution.

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These trends are chilling reminders of the sweeping economic impacts we are now all facing from warming global temperatures.

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Mr Blair agreed with his chief scientific adviser that global warming was the most important long-term challenge facing the world.

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