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COVER
The subverted skull
Research that links male facial width to aggressive behavior is challenged
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An Immense Portugal
Portuguese Empire granted freedom to local elites in order to sustain itself
By Carlos Haag
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The weakness of stem cells
Contamination may be the cause of poor results in treating Parkinson's disease
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A tradition for bringing together knowledge
Martyn Poliakoff regrets the academics' lack of English knowledge
By Carlos Haag
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An inconvenient pinch of magic
Researchers discover alchemy powder in an archive at the Royal Society
By Carlos Haag
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More than an eclipse
Collapse of stellar winds prolongs the cyclical blackout of the Eta Carinae
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The voice of the scientists at Rio+20
How Brazilian research can help to the decisions at Rio+20
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Well-being in the air
Embraer teams up with universities to improve comfort within its airplanes
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… and South America emerged
Huge blocks of rock from different ages and origins formed the continent
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Heaven cannot wait
Redefinition of the space program aims to speed up the launching of satellites
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The magnetic history of Brazil
Magnetic field in South America is weakening, analysis points out