Issue # 182 _ April 2011

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Cover

American inheritance
Indigenous groups from all over the continent share a genetic alteration that favors obesity and diabetes By
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

S&T Policy

Atomic Energy

Safety in the spotlight

Accident in Japan reopens the debate on the future of nuclear research

By and

Human Resources

Write well or perish

Courses and services help researchers write good pieces of scientific work

By

Indicators

The fascination with rankings

Lists of the best universities gain in popularity, despite their methodological limitations

By

indicators

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

Biology

Mutant venoms

Animals of the same species have different venoms

By

Mineralogy

The past in grains of sand

Radioactive material allows the geological origin of the beaches on the southern coast of Rio de Janeiro to be tracked

By

Cosmology

Seeds of life in space

Effect of cosmic rays may have generated molecules that formed animals and plants

By

Tribute

Beyond geography

Hilgard Sternberg dedicated his life to understanding the relationship between man and nature

By

Technology

Biotechnology

The protection of spheres

Using microcapsules to coat the pancreatic islets could become driving force for treating diabetes

By

Food engineering

Leaner biscuits

New ingredient used by industry contains no trans fat

By

Biochemistry

Sugarcane juice in biocells

Energy alternative to produce electric power

By

Nanotechnology

Magnetism for cancer treatment

Group from the State of Minas Gerais develops new route for the production of biomedical materials

By

Humanities

History

What did he want to achieve when he did this?

After 50 years, Jânio Quadros’ resignation still intrigues analysts

By

The history of science

Documents worth their weight in gold

Brazilian researchers find philosopher's stone recipe at the Royal Society

By

Literature

New voices of new authors

Professionalization, the return of the author, and focus on the outskirts of Brazil's big cities underscore recent Brazilian fiction

By