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