Issue # 186 _ August 2011
S&T Policy
Polemic
The owners of rain
Interventions on global climate may already be feasible, but carry huge risks
By Carlos FioravantiScience
Immunology
Allergies make us moody
More than a mere irritation, too much sensitivity to foods may cause anxiety
By Ricardo ZorzettoPublic health
Before waging war on mosquitoes
Context of trip determines whether it is necessary to take malaria medication
By Carlos FioravantiInternational Year of Chemistry
From molecules to organisms
The wealth of biodiversity in the Brazilian forests is also revealed in substances
By Maria GuimarãesPhysics
Energy from the stars
Brazilians and Europeans seek control of nuclear fusion
By Igor ZolnerkevicAstronomy
The heavyweights of the Universe
Alternative mechanism may explain the formation of stars from neutrons that are bigger than normal
By Salvador NogueiraTechnology
Energy
Alternative vinasse
Production waste from ethanol may be used to produce biodiesel
By Marcos de OliveiraForestry resources
Vegetable identification
Beam of light recognizes the chemical composition of species
By Dinorah ErenoNaval Engineering
Clean and efficient cargo ship
Brazilian ship has innovative system for loading and unloading 400,000 tons of iron ore
By Dinorah ErenoHumanities
Archaeology
The culture of geoglyphs
Enormous circles and squares were excavated in the ground in the Amazon two thousand years ago
By Marcos PivettaHistory
The Sun stones
Blocks of granite carved a thousand years ago in Amapá are aligned with the path of a star
By Marcos Pivetta