Issue # 125 _ July 2006

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Cover

Cerebral tuning: Extracted from cannabis, cannabidiol acts against anxiety and other mental disorders

S&T Policy

Biosafety

Embarrassments and skirmishes

Action by environmentalists and public attorneys agitate the CTNBio and open up a crisis with researchers

Public policies

A monitored stroll in the park

A new system evaluates and guards against environmental impact in parks

Science

Cell Biology

Maternal inheritance

The mechanism of the transfer of the mother's bacteria to the offspring of insects is helping stem cell research and the treatment of tropical illnesses

Virology

Men in the spotlight

More attention to masculine sexual health could help to contain the dissemination of a virus linked to uterus cancer

Nutrition

Diet on the tips of the fingers

An analysis of nails shows how nutrition can vary

Ecology

Invisible communities

The surface of a single leaf can house more than 600 species of bacteria

Zoology

Wild life in the Metropolis

The city of Sao Paulo houses 433 species of wild animals, from thrushes to red howler monkeys

Paleontology

The South American super wetlands

Some 10 million years ago water logged flatlands occupied one third of South America

Technology

Genectics

Vegetable intelligence

Genetically modified sugarcane has insecticide property only when attacked by an insect

Metallurgy

Knowledge & opportunity

Researchers set up a company that uses metallic powders for the production of industrial filters

Education

Fun approach

Schools and cities adopt software for children with special learning difficulties

Chemistry

Diet capsule

Animal feeding monitored by an inert chemical substance brings benefits to cattle rearing

Humanities

Political Science

Separated at birth

In spite of the desire of some, PT and PSDB seem destined to follow different paths

History

Blood and sand

To study the ancient gladiators helps in understanding our current society

Economy

Good chinese business

The Asian country could take the place that Brazil had saved for itself in the globalized world