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Does Rope Cause Suicide?

A new paper claims that guns are only involved in 5 percent of suicide attempts but are 50 percent...

Since It's Not Medicine, Medical Students Aren't Trained To Prescribe Medical Marijuana

Although 29 states and the District of Columbia allow marijuana use for medical purposes, there...

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In determining the gender of offspring, fathers may be getting shortchanged. Because mothers...

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A component of egg whites, already a popular whole egg substitute among cholesterol-conscious consumers concerned, may have another beneficial effect - reducing blood pressure, according to a study presented earlier this week at the American Chemical Society (ACS) meeting. 

The researchers used a peptide called RVPSL. Scientists previously discovered that the substance, like the family of medications that includes Captopril, Vasotec and Monopril, was an angiotensin-converting-enzyme (ACE) inhibitor. It has the ability to inhibit or block the action of ACE, a substance produced in the body that raises blood pressure.

Almost everyone who has had an arm or leg amputated experiences a phantom limb, a vivid sensation that the missing limb is still present, like having an itch.

Neuroscientists at the Karolinska Institutet in Sweden have shown that it isn't just for amputees - the sensation of having a physical body is not as self-evident as we might think and have evoked the illusion of having a phantom hand in non-amputated individuals.

Brain studies are a mass of contradictions. When you leave your job and your home and your technology behind for a vacation, you 'disconnect' some claim.

"Actually, you've just given your brain a whole new challenge," says Thomas D. Albright, director of the Vision Center Laboratory at of the Salk Institute and an expert on how the visual system works. "You may think you're resting, but your brain is automatically assessing the spatio-temporal properties of this novel environment-what objects are in it, are they moving, and if so, how fast are they moving?

Researchers recently studied the reaction of aphids when a parasitic wasp with genetic variation laid eggs in them and found that different genotypes of the wasp affected where the aphids went to die, including whether they left the plant host entirely. The team also found an example of the emergence of a shared phenotype that was partly wasp and partly aphid.

A traditional Balkan bedbug remedy has been shown stab and trap the biting insects, according to a paper in the Journal of the Royal Society Interface.

Just in time, too. Bedbugs have made a dramatic comeback in the U.S. in recent years, infesting everything from homes and hotels to schools, movie theaters and hospitals. Although not known to transmit disease, their bites can cause burning, itching, swelling and psychological distress. It helps to catch infestations early, but the nocturnal parasites' ability to hide almost anywhere, breed rapidly and "hitchhike" from place to place makes detection difficult. They can survive as long as a year without a blood meal.

Male and female birds often show differences in body size, with males typically being larger. Some birds, like many ratites – large, flightless species such as emus and cassowaries – are the opposite, with the females towering over the males. 

But some extinct ratites, among the largest female birds in the world, were almost twice as big as their male mates. A new paper says that the size difference in giant moa was not due to any specific environmental factors but instead evolved as a result of scaling-up of smaller differences in male and female body size shown by their smaller-bodied ancestors.