Teens are notorious for taking more risks than adults, and a new imaging study suggests it's because the adolescent brain is hypermotivated when it comes to receiving rewards. A study published online Jan. 13 in Proceedings of the ...
Tags: teen health, adolescent brain, Adriana Galvan, brain cell activity
Applications in imaging and sensing typically involve the emission of light at a different wavelength than the excitation, or "secondary light emission." The interpretation of resonant secondary light emission in terms of fundamental ...
Tags: Secondary Light Emission, Light Emission, by Plasmonic Nanostructures
For decades, researchers working to understand how altruistic behavior evolved have relied on a concept known as inclusive fitness, which holds that organisms receive an evolutionary benefit-and are able to pass on their genes-through ...
Tags: Altruism
In 2013, the U.S. Centers for Disease Control and Prevention (CDC) reported that more than 500 people were sickened by seven strains of Salmonella Heidelberg linked to chicken. However, salmonellosis caused by Salmonella Heidelberg is only ...
Tags: Agriculture, Food, Health, Medicine
Some indigenous groups are more susceptible to the effects of the new strain of influenza -- H7N9 -- currently found in China, researchers in Australia said. Senior author Katherine Kedzierska, an associate professor of the University of ...
The left image shows actual eye movements of two different persons choosing among four snack items as recorded with eye-tracking. Number "1" indicates where the first eye movement is made to. The right image shows predicted eye movements ...
Tags: package, consumers, buying decisions, images of food items
Although social networking sites let users keep in touch with a wide group of acquaintances, new research shows that people still put most of their efforts into communicating with a small group of friends or family members. To maintain a ...
Tags: Social Networks, Communicating
Many phrases reflect how emotions affect the body: Loss makes you feel "heartbroken," you suffer from "butterflies" in the stomach when nervous, and disgusting things make you "sick to your stomach." Now, a new study from Finland suggests ...
For the male canary, the ability to sing a pitch-perfect song is critical to wooing female canaries. As the seasons change, so does song quality and frequency. The hormone testosterone plays a role in this changing song behavior. ...
Tags: hormone testosterone, human brain, anabolic steroids, human behavior
A team of researchers at the Max Planck Institute in Germany has found that a species of hornworm uses nicotine it gets from eating tobacco plants, as a means of defense. In their paper published in Proceedings of the National Academy of ...
Tags: hornworm, nicotine, tobacco plants, defense
How can the tiny marmoset – a New World monkey – regularly successfully bear twins and sometimes triplets and quadruplets when much larger humans often face a difficult pregnancy and delivery? The answer, said researchers led ...
Tags: tiny marmoset, pregnancy, genetic changes, twin gestation
A pair of researchers at Peking University in Beijing China, has extended the capabilities of an existing computer simulation that is used to study tidally locked exoplanets. In their paper published in Proceedings of the National Academy ...
Tags: computer simulation, tidally locked exoplanets, ocean currents
For the male canary, the ability to sing a pitch-perfect song is critical to wooing female canaries. As the seasons change, so does song quality and frequency. The hormone testosterone plays a role in this changing song behavior. ...
Tags: male canary, birdsong, hormone testosterone, changing song behavior
Cold-sensitive mangrove forests have expanded dramatically along Florida's Atlantic Coast as the frequency of killing frosts has declined, according to a new study based on 28 years of satellite data from the University of Maryland and the ...
A safe and effective male birth control pill may be inching closer to reality, according to researchers. In laboratory experiments, mouse sperm was blocked from semen while still allowing for normal sexual activity. Without sperm in the ...
Tags: male birth control, male birth control pill, birth control pills