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Nation and World

Many Americans find workplace ‘unpleasant,’ says study

he American workplace is grueling, stressful and surprisingly hostile. So concludes an in-depth study of 3,066 U.S. workers by the Rand Corp., Harvard Medical School and the University of California, Los Angeles.

‘Liquid biopsies’ for cancer screening see promise in new study

Scientists have the first major evidence that blood tests called liquid biopsies hold promise for screening people for cancer. Hong Kong doctors tried it for a type of head and neck cancer, and boosted early detection and one measure of survival.