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Science News for November 24, 2005


New ice cores expand view of climate history

Researchers have expanded the view of climate history by analyzing new ice cores that provide a record of atmospheric conditions up to 650,000 years. The study suggests that current conditions are a distinct anomaly and may be linked to human influence on greenhouse gases.

SourceOregon State University·JournalScience·DateNov 24, 2005

Zinc supplements safe for HIV-infected children

Researchers found that zinc supplementation is safe and effective in reducing the frequency of watery diarrhea in HIV-infected children. The study showed no increase in plasma HIV-1 viral load measurements, supporting the use of zinc as an adjunct therapy for children with HIV infection.

SourceJohns Hopkins Bloomberg School of Public Health·JournalThe Lancet·DateNov 24, 2005

Children with HIV-infection benefit from zinc supplements

A study by William Moss and colleagues found that zinc supplementation did not increase blood HIV viral load but reduced diarrhoea in children with HIV-infection. The authors suggest using zinc as an adjunct therapy to reduce morbidity and mortality in resource-poor countries.

SourceThe Lancet_DELETED·JournalThe Lancet·DateNov 24, 2005
Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Total lymphocyte count can predict HIV progression in children

A study of over 3,900 children with HIV found that total lymphocyte count can predict disease progression as well as CD4 cell percentage. The current WHO guidelines for starting ART are inconsistent and may lead to inadequate treatment in low-income countries.

SourceThe Lancet_DELETED·JournalThe Lancet·DateNov 24, 2005

Potential malaria drug target identified

A team of researchers has discovered a parasite enzyme, PfSUB2, that sheds sticky surface proteins, allowing the parasite to invade red blood cells. The discovery could lead to the development of new antimalarial drugs that target this enzyme.

SourcePLOS·JournalPLOS Pathogens·DateNov 24, 2005

New evidence extends greenhouse gas record from ice cores by 50 percent, adding 210,000 years

The new ice core analysis provides insights into Antarctic climate and greenhouse gas concentrations during the most recent warm period, known as Marine Isotope Stage 11. This analog warm period occurred between 420,000 and 400,000 years ago and shares similarities with our current warm period due to similar Earth-Sun configurations.

SourceAmerican Association for the Advancement of Science (AAAS)·JournalScience·DateNov 24, 2005

Prisoners should have access to proven HIV prevention methods

A recent study highlights the urgent need for consistent HIV prevention methods in prisons, despite international guidelines recommending similar healthcare standards. Experts argue that mass incarceration of non-violent drug-offenders needs review and should prioritize public health over punitive policies.

SourceThe Lancet_DELETED·JournalThe Lancet·DateNov 24, 2005
Apple iPad Pro 11-inch (M4)

Apple iPad Pro 11-inch (M4) runs demanding GIS, imaging, and annotation workflows on the go for surveys, briefings, and lab notebooks.

Global warming doubles rate of ocean rise

A Rutgers-led team reports a steady millimeter-per-year rise in sea levels from 5,000 years ago until about 200 years ago, contrasting with the current two-millimeter annual increase. The findings argue against widely held tenets of geological science and provide a new baseline for addressing global warming.

SourceRutgers University·JournalScience·DateNov 24, 2005

Engineers create super compressible foam-like films

Researchers at the University of Florida and two other universities have created a new type of foam-like film made from carbon nanotubes, which can be compressed to 15% of its original size. The films show promise for use in solid lubricating coatings for air and space applications.

SourceUniversity of Florida·JournalScience·DateNov 24, 2005

The earliest animals had human-like genes

A study on the Platynereis genome reveals that early animals had complex human-like genes, contradicting previous assumptions. The discovery sheds new light on human evolution and highlights the importance of preserving ancient genetic features.

SourceEuropean Molecular Biology Laboratory·JournalScience·DateNov 24, 2005

Electrons 'tunnel' through water molecules between nestled proteins

Researchers discovered that a small cluster of water molecules can facilitate electron transfer between proteins, contrary to expectations. At intermediate distances, the water molecules play a crucial role in mediating electron tunneling, making it stronger than previously thought.

SourceDuke University·JournalScience·DateNov 24, 2005

Regenerating worms help elucidate stem cell biology

Scientists study flatworms to understand how adult stem cells regenerate tissues, finding key genes involved in the process. Researchers discovered that a specific gene, piwi, plays a crucial role in producing daughter cells capable of restoring damaged tissues.

SourceHoward Hughes Medical Institute·JournalScience·DateNov 24, 2005
CalDigit TS4 Thunderbolt 4 Dock

CalDigit TS4 Thunderbolt 4 Dock simplifies serious desks with 18 ports for high-speed storage, monitors, and instruments across Mac and PC setups.

Grabbing addiction by the tail

A new targeted drug has been developed to prevent long-term changes in brain cells that contribute to addiction. The peptide works by tricking cellular machinery into pulling the glutamate receptor back onto the surface, restoring normal communication between neurons.

SourceHoward Hughes Medical Institute·JournalScience·DateNov 24, 2005

Silenced gene in worm shows role in regeneration

Researchers discover smedwi-2 plays critical role in regulating daughter cell differentiation for tissue maintenance. Silencing this gene leads to animal death, despite intact stem cells, highlighting early specification of progeny

SourceUniversity of Utah Health·JournalScience·DateNov 24, 2005

MUHC ensures blood without bugs

The new blood safety test is capable of detecting major parasitic diseases, including malaria and fasciola, with instant results. Developed by the Montreal Neurological Institute (NRCP) at McGill University, the test has the potential to save countless lives by reducing the risk of parasite transmission through blood transfusions.

SourceMcGill University·DateNov 24, 2005

Nanotube foams flex and rebound with super compressibility

Carbon nanotubes have been found to act like super-compressible springs, flexing and rebounding under compression. The new nanotube foams maintain their resilience even after thousands of compression cycles, offering a unique combination of strength and flexibility.

SourceRensselaer Polytechnic Institute·JournalScience·DateNov 24, 2005
Apple AirPods Pro (2nd Generation, USB-C)

Apple AirPods Pro (2nd Generation, USB-C) provide clear calls and strong noise reduction for interviews, conferences, and noisy field environments.