Start school later, sleep longer, learn better: New study shows that flexible school start times can be an effective and practical approach to reducing chronic sleep deprivation and improving adolescents’ mental health and academic performance.

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bookkeeping was surprisingly labor-intensive in even the bank of the 1950s.

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Made with wood, springs and rubber bands, Rich Walker remembers fondly the first robotic hand built by Shadow Robot in the late 1990s.

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