Issue # 230 _ April 2015
S&T Policy
Gender
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The power of stereotypes
Studies offer new hypotheses to explain the differences between the science careers of men and women
By Bruno de PierroPUBLIC POLICIES
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The first to know
A group releases the findings of AIDS research early to collaborate in prevention efforts
By Bruno de PierroScience
NEUROSCIENCE
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What our memories retain
New connections form between brain cells during REM sleep – the dream stage
By Ricardo ZorzettoEvolution
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Theory under construction
Model explains how natural selection creates groups of traits that vary in unison
By Maria GuimarãesBIOCHEMISTRY
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In times of stress
Under extreme conditions, a plant used in tequila production feeds on bacteria that live within it
By Igor ZolnerkevicAstronomy
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The view from the periphery
Surveys identify dwarf galaxies and stellar nurseries in far reaches of the Milky Way
By Pablo NogueiraTechnology
CHEMISTRY
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Emerging contamination
Caffeine found in treated water indicates the presence of other harmful substances
By Evanildo da SilveiraPhotography
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Recording writing
New method facilitates the transformation of historical handwritten documents into digital files
By Marcos de Oliveira