Wasteful energy policies, overuse of resources, water supply shortages, global climate change, and deforestation are just some of the issues experts say need to be addressed for humans to achieve sustainable living on this planet. By the year 2025, an additional 2.9 billion people will strain tightening water supplies, and the world\'s energy needs will go up 60 percent by 2030, according to the United Nations. LiveScience looks at 10 technologies - some old, some new, some a bit offbeat - that might help make the future a little brighter.
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