Energy
Redesigning world energy systems could not only minimize environmental impacts, but also provide tremendous economic opportunities in industrialized and developing regions.
One obvious leverage point would be more efficient use of existing energy (about two-thirds of which is currently wasted worldwide) and more equitable distribution.
Another is shifting to clean, renewable energy sources, including wind, solar, geothermal, and hydrogen.
And another is transferring sustainable energy technologies to developing regions to allow them to "leapfrog" beyond the energy models used by industrialized regions.
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