Issue # 81 _ November 2002
S&T Policy
patent
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An appeal for flexibility
Rules for intellectual property step up debate between the rich and the poor countries
By Reinaldo José LopesScience
Geology
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More gold under the forest
Two volcanoes in the Amazon may shelter vast reserves of precious minerals
Genetics
![](/wp-content/thumbs/7f45c35e85c6360a73c070988f078cbf1f51084a_300-200cropped.jpg)
Fatal mutations
Team from Rio details the action of the genes responsible for malformation of the head
Technology
CIVIL ENGINEERING
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Expanded concrete
Researcher finds in aluminum slag a new ingredient for producing mortar