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  1. Physics

    Fundamental constant didn’t vary after all

    In disagreement with prior findings, an analysis of new quasar observations indicates that alpha, the universal constant that defines the strength of the electromagnetic force, has not varied since the early days of the cosmos.

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  2. 19413

    I am not an advocate of capital punishment, but I wonder whether the people and organizations who are so anxious to use findings on brain maturity to raise the age of capitol punishment have considered the consequences of winning their case. One might argue on the same basis that anyone who has not yet reached […]

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  3. Teen Brains on Trial

    Scientific opinions differ about whether evidence on delayed maturation of the adolescent brain should be used to argue that teenagers have reduced culpability for crimes and thus should be exempt from the death penalty.