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A history of experiments through the ages.
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"[T]he thermoelectric figure of merit (ZT) for the ingots increased to 1.2 at room temperature (from a value of 1.0 previously). Moreover, they found that the ZT peaks at 1.4 at 100 °C."
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A guide to discussing scientific issues with journalists.
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"Dirty limericks emerged only quite recently, geologically speaking."