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The company thinks adding solar-thermal technology to its natural-gas plants will make them run more cheaply and efficiently
A startup tests a cleaner way to produce the steam needed for oil extraction.
New solid-state power-management devices will charge cars fast and make the power grid more flexible and efficient.
But the lack of comprehensive legislation could prevent international agreements needed to limit global warming.
Cells absorb sunlight concentrated 1,000 times without cooling.
The new cells promise to be cheaper, more efficient, and even printable.