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Rate of bicycle-related fatalities significantly lower in states with helmet laws

Existing research shows that bicyclists who wear helmets have an 88 percent lower risk of brain injury, but researchers at Boston Children's Hospital found that simply having bicycle helmet laws in place showed a 20 percent decrease in deaths and injuries for children younger than 16 who were in bicycle-motor vehicle collisions.

Health | Source: Boston Children's Hospital | Views: 56 | Comments: 0
Scientists discover how rapamycin slows cell growth

University of Montreal researchers have discovered a novel molecular mechanism that can potentially slow the progression of some cancers and other diseases of abnormal growth. In the May 23 edition of the prestigious journal Cell, scientists from the University of Montreal explain how they found that the anti-cancer and anti-proliferative drug rapamycin slows down or prevents cells from dividing.

Molecular Biology | Source: University of Montreal | Views: 58 | Comments: 0
Vaccine blackjack: IL-21 critical to fight against viral infections

Scientists at Emory Vaccine Center have shown that an immune regulatory molecule called IL-21 is needed for long-lasting antibody responses in mice against viral infections.

Immunology | Source: Emory Health Sciences | Views: 53 | Comments: 0
Hubble reveals the Ring Nebula's true shape

The Ring Nebula's distinctive shape makes it a popular illustration for astronomy books. But new observations by NASA's Hubble Space Telescope of the glowing gas shroud around an old, dying, sun-like star reveal a new twist.

Astronomy | Source: NASA/Goddard Space Flight Center | Views: 62 | Comments: 0
A hidden population of exotic neutron stars

Magnetars – the dense remains of dead stars that erupt sporadically with bursts of high-energy radiation – are some of the most extreme objects known in the Universe. A major campaign using NASA's Chandra X-ray Observatory and several other satellites shows magnetars may be more diverse – and common – than previously thought.

Astronomy | Source: Chandra X-ray Center | Views: 45 | Comments: 0
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A hidden population of exotic neutron stars

Magnetars – the dense remains of dead stars that erupt sporadically with bursts of high-energy radiation – are some of the most extreme objects known in the Universe. A major campaign using NASA's Chandra X-ray Observatory and several other satellites shows magnetars may be more diverse – and common – than previously thought.

Astronomy | Source: Chandra X-ray Center | Views: 45 | Comments: 0
The secret lives, and deaths, of neurons

As the human body fine-tunes its neurological wiring, nerve cells often must fix a faulty connection by amputating an axon — the "business end" of the neuron that sends electrical impulses to tissues or other neurons. It is a dance with death, however, because the molecular poison the neuron deploys to sever an axon could, if uncontained, kill the entire cell.

Neuroscience | Source: University of North Carolina Health Care | Views: 48 | Comments: 0
Researchers suggest boosting body's natural flu killers

A known difficulty in fighting influenza (flu) is the ability of the flu viruses to mutate and thus evade various medications that were previously found to be effective. Researchers at the Hebrew University of Jerusalem have shown recently that another, more promising, approach is to focus on improving drugs that boost the body's natural flu killer system.

Immunology | Source: The Hebrew University of Jerusalem | Views: 47 | Comments: 0
Protein preps cells to survive stress of cancer growth and chemotherapy

Scientists have uncovered a survival mechanism that occurs in breast cells that have just turned premalignant-cells on the cusp between normalcy and cancers-which may lead to new methods of stopping tumors.

Cancer | Source: Salk Institute | Views: 50 | Comments: 0
The world's favorite fruit only better-tasting and longer-lasting

Tomatoes, said to be the world's most popular fruit, can be made both better-tasting and longer-lasting thanks to UK research with purple GM varieties.

Agriculture | Source: Norwich BioScience Institutes | Views: 50 | Comments: 0
Video: Motion quotient - A brief visual task can predict IQ

A brief visual task can predict IQ, according to a new study. This surprisingly simple exercise measures the brain's unconscious ability to filter out visual movement. The study shows that individuals whose brains are better at automatically suppressing background motion perform better on standard measures of intelligence.

Agriculture | Source: University of Rochester | Views: 70 | Comments: 0
Researchers identify new target to boost plant resistance to insects and pathogens

Plants can't swat a bug or run away from one, but that doesn't mean that plants can't fight back. Plants have evolved unique and sophisticated immune systems to defend themselves against insects and pathogens. Plant hormones called jasmonates play an important role in this defense, but jasmonates have been found to also be important for plant growth. Now, researchers reporting in the May 23 issue

Plant Biology | Source: Cell Press | Views: 46 | Comments: 0
Defective cellular waste removal explains why Gaucher patients often develop Parkinson's disease

Gaucher disease causes debilitating and sometimes fatal neurodegeneration in early childhood. Recent studies have uncovered a link between the mutations responsible for Gaucher disease and an increased risk of developing Parkinson's disease later in life. New research published online on May 23 in the Cell Press journal Cell Metabolism indicates that the neurodegeneration found in Gaucher d

Neuroscience | Source: Cell Press | Views: 47 | Comments: 0
White tiger mystery solved

White tigers today are only seen in zoos, but they belong in nature, say researchers reporting new evidence about what makes those tigers white. Their spectacular white coats are produced by a single change in a known pigment gene, according to the study, appearing on May 23 in Current Biology, a Cell Press publication.

Genetics | Source: Cell Press | Views: 52 | Comments: 0
Gold nanocrystal vibration captured on billion-frames-per-second film

A billon-frames-per-second film has captured the vibrations of gold nanocrystals in stunning detail for the first time.

Physics | Source: University College London | Views: 40 | Comments: 0
Consumers largely underestimating calorie content of fast food

People eating at fast food restaurants largely underestimate the calorie content of meals, especially large ones, according to a paper published today on bmj.com.

Health | Source: BMJ-British Medical Journal | Views: 44 | Comments: 0
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