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Science News for July 28, 2003


Safe is sexy

A study published in Animal Behaviour found that female fiddler crabs are attracted to burrows, not just male courtship signals. The researchers suggest that some male signals may be designed to keep females safe as they search for a mate.

SourceSmithsonian Tropical Research Institute·JournalAnimal Behaviour·DateJul 28, 2003

Type 2 diabetes linked to a family of metabolic genes

A study by Joslin Diabetes Center has identified a family of metabolic genes associated with type 2 diabetes risk. The research found that 55 genes showed altered activity in both people with diabetes and those at high risk for prediabetes, suggesting a continuum from normal to diabetic states.

SourceJoslin Diabetes Center·JournalProceedings of the National Academy of Sciences·DateJul 28, 2003

Birth control for brain neurons

A molecule called nitric oxide is a natural regulator of new neurons in the adult brain. Blocking nitric oxide production stimulates neural stem cell proliferation, increasing brain neuron generation and contributing to the adult brain's architecture.

SourceCold Spring Harbor Laboratory·JournalProceedings of the National Academy of Sciences·DateJul 28, 2003

Nanotechnology: sink or swim?

The report provides a sober assessment of nanotechnology's possibilities, distinguishing between current applications, potential future advancements, and unfeasible goals. It also explores the role of social science in nanotechnology development, highlighting opportunities to anticipate and incorporate implications into the technology.