Though Donald Trump's policies may not help his voters economically, sociologist Arlie Hochschild says he is speaking to them on a deeper level: meeting their emotional needs.
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Some ethicists and consumer watchdog groups worry that the newly revised federal rules governing medical research don't go far enough to protect the rights and privacy of patients.
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Research with living systems is never simple, scientists say, so there are many possible sources of variation in any experiment, ranging from the animals and cells to the details of lab technique.
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