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Science News Archive May 2005 - Page 6


Page 6 of 16

Lack of coherent cloning policies reflects polarized debate, limited understanding, study says

A new report by the Genetics & Public Policy Center reveals a polarized debate over cloning policies, with high awareness but limited understanding of its scientific feasibility. The report highlights the need for sound science policy and contributes to public understanding of the complex ethical and policy issues surrounding cloning.

GM rice will not end hunger in China

Despite China's genetically modified (GM) rice ambitions, poverty and unequal land distribution will persist, hindering efforts to eliminate hunger. The Lancet notes that GM technology is not a solution to food insecurity, but rather a Band-Aid on the symptoms of deeper issues.

SourceThe Lancet_DELETED·JournalThe Lancet·DateMay 19, 2005

Neutrality and the National Security Council adviser

The role of the National Security Council adviser requires balancing brokerage and political advocacy to maintain neutrality. However, in limited forms, advocacy can be beneficial when an underrepresented point-of-view needs to be heard. The adviser's ability to make sound decisions depends on effective processes.

SourceBlackwell Publishing Ltd.·JournalPresidential Studies Quarterly·DateMay 19, 2005

Nanoscale switch links electronics to photonics

Researchers at Cornell University have developed a silicon device that can modulate light on a micrometer scale, enabling the integration of electronics and photonics. The device uses a ring resonator to filter out specific wavelengths of light, allowing for efficient switching between states.

SourceCornell University·JournalNature·DateMay 19, 2005

Photos reveal new primate species

A new long-haired forest primate, named Highland Mangabey, has been discovered in Tanzania's Southern Highlands. The critically endangered species is characterized by a distinctive call and adaptation to the cold climate, with an estimated population of between 500-1,000 animals.

SourceWildlife Conservation Society·JournalScience·DateMay 19, 2005

Sumatra-Andaman earthquake modeled and mapped

Researchers used various models to recreate the rupture history and variation along the fault, revealing the earthquake's length, epicenter, and speed. The study provided valuable insights into one of the largest earthquakes recorded on modern equipment.

SourcePenn State·JournalScience·DateMay 19, 2005

Making states work

The book Making States Work examines the roles of international actors, local elites, and civil society in building public institutions. Key findings include successes in Mozambique and Costa Rica, as well as case studies on state failures in regions such as the Great Lakes and South Central Asia.

New kidney function test better than standard at predicting death and cardiovascular outcomes

A new kidney function test, cystatin-C, is more effective than the standard test creatinine in predicting death and cardiovascular outcomes in elderly participants. The study found that 60% of participants with high cystatin-C levels had abnormal kidney function, putting them at medium or high risk for cardiovascular complications.

SourceNIH/National Heart, Lung and Blood Institute·JournalNew England Journal of Medicine·DateMay 18, 2005

Marshes tell story of medieval drought, little ice age, and European settlers near NYC

Researchers from Columbia University and NASA used sediment layers to uncover a 500-year drought from 800 A.D. to 1300 A.D., as well as the effects of the Little Ice Age and European settlers' agricultural practices on the area's climate. The study found increased erosion, saltier water, and changes in vegetation during these periods.

SourceNASA/Goddard Space Flight Center·JournalQuaternary Research·DateMay 18, 2005

Discovery of a 'drug anticipation' brain signal

Scientists detect dopamine release from nucleus accumbens in rats, revealing three distinct signals associated with cocaine administration. The findings suggest that dopamine release transients are highly plastic and governed by motivation, learned association, and pharmacological actions.

SourceCell Press·JournalNeuron·DateMay 18, 2005

Words influence smells

Subjects rated odors more pleasant when labeled with positive words like 'cheddar cheese', whereas unpleasant labels had the opposite effect. The study also found that brain regions processing odors were activated by word labels, highlighting high-level cognitive inputs' impact on sensory perception.

SourceCell Press·JournalNeuron·DateMay 18, 2005