Battery-powered engine-and-prop unit can drop into water with a range of 32 miles.
We're all aglow this week with tech that glows.
Thanks to their solar plane, two Swiss pilots are set to fly around Earth -- slowly, very slowly, but surely -- on the strength of the sun alone.
From tattoo batteries to paint that powers a car, from floating solar farms to wires made from DNA, catch up on the year's most exciting energy news.
Falling oil prices left renewable energy’s immediate future in limbo, but solar power is expanding.
The proposed installation would deploy floating solar panels on the surface of a reservoir.
Check out ten technologies from 2014 that never let up the entire year.
While fossil fuel energy represents the most common class of power generation, solar power just made a big leap forward, hitting 46 percent efficiency. Trace runs down the details and sees how the breakthrough stacks up against other power systems.
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