Plastic power: polymers take a step forward as photovoltaic cells and lasers
Article Abstract:
Semiconducting polymers may soon be used for photovoltaic cells and lasers. Researchers at the Advanced Research Development in Athol, MA, have designed plastic solar cells utilizing polyvinyl alcohol and polyacetylene. Films of this copolymer can convert 75% of the light received into electricity.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1996
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Suicide prevention
Article Abstract:
Neurobiological research reveals a significant correlation between suicidal tendencies and serotonin levels in the brain. Brain tissue samples from groups predisposed to high suicide rates, such as alcoholics, showed a high number of serotonin receptors and low levels of serotonin.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1997
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The price of prevention
Article Abstract:
Many quarters had advocated the inclusion of preventive medicine programs in the health care reform proposal in the belief that such efforts would help cut medical spending. However, research shows that preventive medicine is not worth its cost, except in very few cases.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1995
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