* Astronomy

Scientists have shown off an effect not unlike that of the "phasers" in the show Star Trek - but it only works on tiny worms called nematodes.
They used a special molecule that, when exposed to ultraviolet (UV) light, changes its shape. When the worms were fed this molecule and then exposed to UV light, they exhibited paralysis. But when the worms were again exposed to visible light, they regained their ability to move.
The work is published in Journal of the American Chemical Society.

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