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Science News Archive March 2007


Page 1 of 18

The gigantic respiration of crystalline solids

Gérard Férey and his team at Institut Lavoisier have discovered a new family of trivalent metal dicarboxylates with unprecedented respiration properties, exceeding 300% volume variation upon solvent immersion. These crystalline solids possess reversible respiration mechanism without apparent bond rupture.

SourceCNRS·JournalScience·DateMar 31, 2007

The formation of social memories

Researchers have identified the medial prefrontal cortex as a crucial region in storing and recalling social memories. This finding opens new perspectives on understanding human recollections and mental disorders affecting social skills.

SourceCNRS·JournalCognitive Neuroscience·DateMar 31, 2007

Hard as nails!

Researchers at the University of Manchester discovered that nails are most resilient in humid environments with a relative humidity of 55-60%. This finding may help improve false nail and varnish products, reducing breakage and damage.

Bats get the munchies too!

A recent study discovered that Egyptian fruit bats have a preference for certain sugars, including fructose and sucrose, to counteract the effects of ethanol toxicity. Consuming fructose-containing food resulted in faster decline of ethanol levels in their breath compared to other types of sugar.

Fishing for alternatives

Researchers are developing alternative culture methods to reduce the use of live fish in safety testing, reducing animal experimentation. Dr Richard Handy's perfusion method allows for the controlled exposure of fish organs to toxins, providing insights into toxicity and organ function.

Danish researches solve virus puzzle

Danish researchers have shed light on how viruses, like HIV and bird flu, trick human cells into producing proteins needed for replication. They developed optical tweezers to investigate the mechanical unfolding of pseudoknots, a crucial step in virus replication.

SourceUniversity of Copenhagen·JournalProceedings of the National Academy of Sciences·DateMar 30, 2007

Harvard and U. Pittsburgh researchers explain carbon monoxide's anti-inflammatory effects

Scientists from Harvard University and the University of Pittsburgh found that carbon monoxide reduces or shuts down inflammatory responses by releasing chemical signals in mitochondria. This discovery raises hopes for developing new anti-inflammatory therapies, such as low levels of inhaled carbon monoxide.

A sweet step toward new cancer therapies

A team of researchers has developed a technique to identify and structurally characterize glycans, assemblies of sugars attached to proteins on cancer cell surfaces, which may lead to the development of diagnostic tools or therapeutic agents specifically targeting them.

SourceUniversity of Michigan·JournalAnalytical Chemistry·DateMar 30, 2007

Preventing cancer without killing cells

Aging cells with dysfunctional telomeres can promote tumorigenesis, but p53-mediated senescence may suppress spontaneous cancer development. Activating the senescence pathway is sufficient to prevent tumorigenesis in mutant mice with dysfunctional telomeres.

SourceEMBO·JournalEMBO Reports·DateMar 30, 2007

Case Western researcher, international team call for better global warming forecasting

A team of international scientists, including Case Western Reserve University's Matthew Sobel, has proposed eight ways to improve biodiversity forecasting in the face of global warming. The researchers aim to provide more accurate predictions and reduce misinformation that can divert resources away from other areas. By acknowledging th...

SourceCase Western Reserve University·JournalBioScience·DateMar 30, 2007

Carry on walking!

Researchers assessed female participants carrying different types of loads, finding that evenly spread loads are more efficient than awkward ones. This study supports the theory that early hominins carried children to adapt to walking on two legs.

Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply

A study found that overfishing large sharks leads to an explosion of their ray and skate prey species, which in turn devastates scallop populations. The decline of great sharks has triggered cascading effects throughout coastal food webs, impacting local communities that depend on healthy fisheries.

The impossible siblings

Astronomers have described the double asteroid Antiope in unprecedented detail, revealing its unique orbit and shape. The asteroid consists of two rubble-pile chunks of material, tidally locked and rotating around each other at the same speed as they orbit.

SourceESO·JournalIcarus·DateMar 29, 2007

New chemistry approach promises less expensive drugs

A team of Princeton University chemists has discovered a new method to synthesize molecules without toxic catalysts, reducing the risk of hazardous barriers in drug development. This breakthrough opens up new possibilities for working with ketones and aldehydes, potentially leading to more efficient synthesis of beneficial enantiomers.

SourcePrinceton University·JournalScience·DateMar 29, 2007

All roads lead to GUN1

Researchers at the Salk Institute discovered that GUN1, a nuclear-encoded protein, plays a crucial role in transmitting distress signals from damaged chloroplasts to the nucleus, triggering a shutdown of photosynthetic genes. This finding sheds light on the complex communication between organelles and the nucleus.

SourceSalk Institute·JournalScience·DateMar 29, 2007