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Researchers at MIT have shown the benefits of a new approach toward eliminating carbon-dioxide emissions at coal-burning power plants.

Concentrating emissions

Ahmed Ghoniem of mechanical engineering leads an MIT effort to make coal plants cleaner by using a pressurized combustion system to capture carbon dioxide.

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This artist's conception of the double-star system DI Herculis illustrates the key findings from the new research. Spectroscopic observations showed that the two stars are both tipped over almost horizontally, relative to the plane of their orbits around each other. Because they are rotating rapidly which creates equatorial bulges, the tidal interactions between the two slows down a regular variat...

Oddball stars explained

New observations solve longstanding mystery of tipped rotation. In addition to shedding light on how binary stars form, the explanation knocks down a possible challenge to Einstein's theory of relativity.

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