Issue # 135 _ May 2007

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Cover

A risky bet against diabetes
Experimental treatment with chemotherapy and stem cells rids 14 patients of insulin injections By

S&T Policy

Biosecurity

When does life begin?

Brazil's Federal Supreme Court had 22 experts convene before voting on a motion against the use of embryo stem cells

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Financing

Consolidated budget

Ministry of Science and Technology to increase grants in strategic areas

partnership

A well-meaning law

Carlos Américo Pacheco evaluates the effects of the Innovation Law

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Partnerships

Research and Innovation Inc.

Embrapa and private enterprise want to create a technology firm for ethanol

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Development aid

At the cutting edge of knowledge

Partnership with Microsoft Research brings about a new support model for basic research

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Science

Etiology

With sticks and stones

Capuchin monkey uses tools to break open fruit or hunt ants

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Physics

Moving sculptures

Computer simulations explain how the giant dunes on Mars emerge and evolve

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Botany

New model

Mutant tomato plants help unveil the genes and hormones that regulate the lives of plants

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Physiology

Interrupted nights

Inflammation temporarily blocks production of the hormone that tells the body that it's time to sleep

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Technology

Energy

Advantageous fermentation

The use of new types of yeast may reduce the production costs in sugar and alcohol refineries

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Agronomy

Lethal symbiosis

Biological insecticide uses a partnership between bacteria and nematodes to fight sugarcane pest

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Chemistry

Intelligent paint

Researchers use nanotechnology to create a pigment that changes color

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Aerospace engineering

Hypersonic wind

A tunnel to test airplanes that are much faster than the speed of sound

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Plastic

Rapid decomposition

Researchers develop a recycled polymer made from PET that is not harmful to the environment

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Humanities

Education

The Internet in schools

Taking the worldwide web into the classroom and vice-versa is still an economic and strategic challenge for educators and governments.

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History

The citizen who smelled like a king

Profiles show that Pedro II was more interested in the essence than the appearance of power

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Literature

What's life like without dragons?

The last book in the Harry Potter series is a good reason to discuss the current desire for enchantment

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