This week in science: a very different kind of "mystery meat", the climate dangers of contrails, and and artificial leaf that does more than make your office look nicer. And robots: a robot that puts the "personal" in PC, a robot that can build other robots, and a robot that makes paper airplanes (but is not a slacker). Also, fighting fire with electricity, a floating solar power plant and T-Rex's new cousin. Stay tuned!
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