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Struggling to make an impact

Actions speak louder than images

Visual neuroscience: Look and learn

Appropriate technology: Make anything, anywhere

Health agency backs use of DDT against malaria

India's watchdog: A breath of fresh air

China: Open season

Microbiology: Straight from the gut

HIV/AIDS

Profile: Marc Tessier-Lavigne

Nebulous new rules rouse fear and loathing in laboratories

Contraceptive research pregnant with anticipation

Scientists seek simple remedies to cloning conundrums

China launches new molecular medicine institute

Scientists, NIH in conflict over precious HIV samples

News Feature: One for the money

Profile: Peter Doherty

Fertility's new frontier takes shape in the test tube

Profile: Jeff Friedman