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Science News for August 21, 1997


University Of Pittsburgh Scientists Find Biological Clue To Why Ex-Smokers Develop Lung Cancer Many Years After Quitting

Researchers at the University of Pittsburgh Cancer Institute have found a biological switch that drives the growth of lung cells in ex-smokers, leading to an increased risk of lung cancer. The 'switch' is triggered by gastrin-releasing peptide (GRP) receptors, which capture circulating hormones and spur lung cell division.

'FLARE' For Fire Research Leads To New Detector

A new fire detector developed by Purdue University engineers senses temperature to detect flames, providing a fast response time compared to traditional smoke detectors. The device can also be integrated into home security systems and may reduce false alarms caused by common household occurrences.