Issue # 182 _ April 2011
Cover
- American inheritance
- Indigenous groups from all over the continent share a genetic alteration that favors obesity and diabetes By Ricardo Zorzetto
- Like our parents
- New study says that the first Americans looked like Africans and increases the controversy concerning the arrival of man on the continent By Marcos Pivetta
S&T Policy
Atomic Energy

Safety in the spotlight
Accident in Japan reopens the debate on the future of nuclear research
By Fabrício Marques and Carlos FioravantiHuman Resources

Write well or perish
Courses and services help researchers write good pieces of scientific work
By Fabrício MarquesIndicators

The fascination with rankings
Lists of the best universities gain in popularity, despite their methodological limitations
By Fabrício Marquesindicators

Out of the mouths of scientists
Article by chemists from Unicamp is among the most popular in the journal, Analyst
Science
Neurophysiology

Unexpected effect
Corticoids activate inflammation mechanisms in some areas of the brain
By RedacciónCosmology

Seeds of life in space
Effect of cosmic rays may have generated molecules that formed animals and plants
By Carlos FioravantiTribute

Beyond geography
Hilgard Sternberg dedicated his life to understanding the relationship between man and nature
By Maria GuimarãesTechnology
Biotechnology

The protection of spheres
Using microcapsules to coat the pancreatic islets could become driving force for treating diabetes
By Marcos PivettaFood engineering

Leaner biscuits
New ingredient used by industry contains no trans fat
By Dinorah ErenoBiochemistry

Sugarcane juice in biocells
Energy alternative to produce electric power
By Marcos de OliveiraNanotechnology

Magnetism for cancer treatment
Group from the State of Minas Gerais develops new route for the production of biomedical materials
By Yuri VasconcelosHumanities
History

What did he want to achieve when he did this?
After 50 years, Jânio Quadros’ resignation still intrigues analysts
By Carlos Haag