Scientists have reported that an experimental vaccine targeting one of the most common genetic drivers of pancreatic cancer, called mutant KRAS, is safe and generated a durable immune responses aimed at preventing the cancer.
Caffeine drinks are in some kind of arms race and as caffeine levels escalate, so do reports of caffeine overdose. It's not just those terrible-tasting energy drinks, it's also in snacks, candy, and even chewing gum.EnergyFiend.com has tracked caffeine levels for the past 8 years and found that the number of caffeinated products does not appear to be slowing down. According to editor Ted Kallmyer, “We’re now tracking over 1,000 items, and among those are some products with very high levels of caffeine. They are clearly targeted to the teen market.”
How would you measure the 'evolution' - that is to say, changes - in human culture and psychology over the last 200 years?
Psychologist Patricia Greenfield of the University of California, Los Angeles used the Google Ngram Viewer to examine the frequencies of specific words in a corpus of over 1,160,000 English-language books published in the United States between 1800 and 2000. At least it tells us how linguistics evolved.
The result, says Greenfield, is that people have shifted from rural environment to urban.
She has coined this hypothesis the "Theory of Social Change and Human Development" and believes that the usage of specific words waxes and wanes as a reflection of psychological adaptation to sociocultural change.
Mathematics is a skill. Some people are better at it than others, so an individual person's math ability can range anywhere from being able to do simple arithmetic to calculus and abstract set theory.
But there is some math ability we all share, according to psychologists: a simple ability to estimate and compare quantities without overtly counting, like when choosing a checkout line at the grocery store - guesstimating, though not quite as lazy as it sounds.
Though it makes microbiologists gasp in horror, sous vide ("under vacuum") cooking - which uses lower temperatures with claims it improves food quality - is all the rage in food circles now.
But it's unclear what the risks are. Advocates of it have history on their side; preserving and cooking food in leaves, fat, salt and animal bladders before being cooked is as ancient as cooking. And isolating food from air, such as vacuum sealing, can arrest the decay of food.
Dolphins can recognize the whistles of former tank mates even after being separated for more than 20 years; that's the longest social memory known outside people.
This adds to evidence that dolphins have a level of cognitive sophistication comparable to few other species, including chimpanzees and elephants. Dolphins' talent for social recognition may be even comparable or more long-lasting than facial recognition among humans, since human faces change over time but the signature whistle that identifies a dolphin remains stable over many decades.
"This shows us an animal operating cognitively at a level that's very consistent with human social memory," said Dr. Jason Bruck of the University of Chicago's program in Comparative Human Development.
Women are given a 'due date' for their baby that is calculated as 280 days after the onset of their last menstrual period.
Yet it's unlikely to be anything more than a guide. Only 4 percent of women deliver at 280 days and only 70% deliver within 10 days of their estimated due date, even when that date is calculated with the help of ultrasound. In the real world, the length of pregnancy can vary naturally by as much as five weeks
Researchers have been able to pinpoint the precise point at which a woman ovulates and a fertilised embryo implants in the womb during a naturally conceived pregnancy, and follow the pregnancy through to delivery. Using this information, they have been able to calculate the length of 125 pregnancies.
An article in BMJ reports on the first instance of probable person-to-person transmission of the new avian influenza A (H7N9) virus, which was recently identified in Eastern China. As of June 30th 2013, 133 cases had been reported, resulting in 43 deaths.
Most cases appear to have visited live poultry markets or had close contact with live poultry 7-10 days before illness onset. Currently no definite evidence indicates sustained human-to-human transmission of the H7N9 virus.
A RIKEN research team says that an enzyme called Rines regulates
Monoamine oxidase A (MAO-A), a major brain protein controlling emotion and mood, making it a potential drug target for treating depression.
Monoamine oxidase A is an enzyme that breaks down serotonin, norephinephrine and dopamine, neurotransmitters well-known for their influence on emotion and mood. Nicknamed the "warrior gene", a variant of the MAOA gene has been associated with increased risk of violent and anti-social behavior.
While evidence points to a link between MAO-A levels and various emotional patterns, however, the mechanism controlling MAO-A levels in the brain has remained unknown.
In a new study, researchers show that is possible to restore immune function in spinal injured mice.
People with spinal cord injury often are immune compromised, which makes them more susceptible to infections. Why spinal cord injury patients become immune-suppressed is not known, but the paper says that a disorder called autonomic dysreflexia, a potentially dangerous complication of high-level spinal cord injury characterized by exaggerated activation of spinal autonomic (sympathetic) reflexes, can cause immune suppression.
Autonomic dysreflexia can cause an abrupt onset of excessively high blood pressure that can cause pulmonary embolism, stroke and in severe cases, death.
If you have to have light at night, a new study suggests that the color can make a big difference in how (un)healthy it is - and the answer is counter-intuitive.
Though the color blue is believed to have a calming effect, a study involving hamsters found that blue light had the worst effects on mood-related measures, followed closely by white light. The best? Red.
Hamsters exposed to red light at night had significantly less evidence of depressive-like symptoms and changes in the brain linked to depression, compared to those that experienced blue or white light. Total darkness is still best.
In the next few months, something big is going to happen - but don't worry if you miss it, in about 11 years, it will happen again.The sun's vast magnetic field is about to flip.The sun's magnetic field changes polarity approximately every 11 years, at the peak of each solar cycle as the sun's inner magnetic dynamo re-organizes itself. The coming reversal will mark the midpoint of Solar Cycle 24, which means half of 'Solar Max' will be behind us, with half yet to come.
Over 12 billion years ago, a star exploded and blasting its remains outward in twin jets at nearly the speed of light. Its glow was a million times brighter than its entire galaxy.
After traveling across space for 12.7 billion years, that flash was seen by astronomers on a planet that didn't even exist when the explosion happened - Earth. By analyzing this light, astronomers learned about a galaxy that was otherwise too small, faint and far away for even the Hubble Space Telescope to see.
