In another twist on wind power, inventors are designing kites and balloons to generate electricity. The wind industry is undergoing rapid growth as utilities, prompted by government incentives, seek ...

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Solar powered aircraft are old news. From Solar Impulse supporting one person day and night with nothing but photovoltaics on the wings to the high altitude unmanned aircraft being developed by Boeing ...

The wind industry is best known for propeller-based turbines. But some inventors believe kites and balloons can capture wind power as well. Images: 'Flying' wind generators Martin LaMonica is a senior ...