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Science News for July 2, 2003


The communication of risk

Risk experts address communication challenges in public health and policy contexts, discussing factors like perception, information quality, and industry influence. Effective risk communication is crucial for public health decisions and policy-making.

SourceBlackwell Publishing Ltd.·JournalJournal Of The Royal Statistical Society·DateJul 2, 2003

Breast cancer researchers question tradition

A recent study found that high-dose chemotherapy followed by autologous stem cell transplant did not significantly increase survival rates for women with early stage breast cancer. The study, which included 511 patients, showed a higher number of relapses in the treatment group but also nine deaths due to transplantation complications....

SourceUniversity Hospitals of Cleveland·JournalNew England Journal of Medicine·DateJul 2, 2003

Embryonic hope for damaged spines

Researchers have successfully treated rats with spinal cord injuries using embryonic stem cells, which can potentially treat paralysis and degenerative nerve diseases. The treated rats regained ability to walk after nine weeks, with analysis revealing new myelin sheaths and growth factors that stimulated neuron formation.

Leaf fall in ancient polar forests still a mystery

Researchers tested ancient tree species to disprove the carbon loss hypothesis, which suggested deciduous trees had an advantage in polar forests. The study found that deciduous trees actually lose more carbon than evergreen trees, challenging the long-held theory.

SourcePenn State·JournalNature·DateJul 2, 2003

U. Iowa study adds to understanding of salt-taste

Researchers at U. Iowa identified two ion channel genes that detect low salt concentrations in fruit flies, a model organism for studying human salt-sensing mechanisms. Disrupting these genes impaired the ability of young flies to detect low salt, highlighting their role in the detection of salt.

SourceUniversity of Iowa·JournalNeuron·DateJul 2, 2003

Habitat loss and reserve network selection

A novel method integrates habitat modelling and spatial population dynamics in reserve-network design to consider the impact of habitat loss on species survival. This approach represents a step towards more realistic consideration of species survival when selecting reserve networks.

SourceBlackwell Publishing Ltd.·JournalEcology Letters·DateJul 2, 2003