scientific study

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Birth Season Affects Your Temperament

Hungarian study says summer babies have more mood swings

(Newser) - Getting moodier as you grow older? That may be because you were born in summer—assuming, of course, that you were born in summer, according to a new study out of Hungary. Researchers in Budapest who analyzed 400 people say they found a direct connection between the subjects' temperament and... More »

Scientists Determine Your 'Optimal' Amount of Sleep

7.6 hours for women, 7.8 hours for men

(Newser) - Suspect you're not getting enough sleep? You can now verify whether that is indeed the case. In a study published last month in the journal Sleep , researchers claim to have determined exactly how much sleep we need: 7.6 hours for women and 7.8 hours for men. The... More »

Scientists Surprised by Central Park Dirt

It has as much biodiversity as soils 'from the Arctic to Antarctica'

(Newser) - Dirt probably isn't something you'd think of as having "so much going on," but scientist Kelly Ramirez begs to differ. She's sampled dirt from tropical forests to deserts around the world and found it "teeming with so many different types of organisms," she... More »

Your Dog Might Be a Pessimist

Research indicates 'pessimistic' pups give up more easily, seem to expect the worst

(Newser) - Certain dogs apparently feel like they're perpetually in the doghouse, according to a University of Sydney study that says some dogs are pessimists, getting demoralized more easily than other dogs and just giving up on tasks when they've had enough. The research, published this week in the Plos ... More »

Macho Men Have So-So Sperm

Tradeoff between looks and virility might be at play, says study

(Newser) - Macho guys may attract more women, but the quality of their sperm might not be of he-man standards, a new study suggests. Oddly, the sperm of good-looking guys—but not necessarily macho ones with square jaws and distinct cheekbones—is just fine, reports Medical Daily . The link was found when... More »

1 in 7 'Sleep Drunk' After Waking

And you know you who are

(Newser) - Have you ever woken up so confused you've mistaken a water bottle for a telephone, or the closet for a toilet? If so, you might be among the one in seven people estimated to suffer from a sleep disorder called "confusional arousal," reports MedPage Today . Or to... More »

Scientists Turn Bad Memories to Happy Ones

Research could mean more effective treatment for human disorders

(Newser) - Scared to death of spiders after you found one crawling in your bed? Scientists may have discovered a way for you to find them positively cuddly. After identifying the neurons powered by positive and negative memories in mice, MIT neuroscientists found a way to use light to essentially rewrite a... More »

Medical Marijuana May Cut Painkiller ODs

States with new laws see drop in opioid deaths

(Newser) - The solution to America's addiction to painkillers may be … more drugs? A new study found a drop in painkiller overdose deaths in 13 states that allowed medical marijuana, CNN reports. That's because a patient prescribed marijuana will either stop taking opioids or take less of them, researchers... More »

TB's Arrival in New World: Blame Seals

New study also suggests TB is only 6K years old

(Newser) - Tuberculosis may have reached the New World long before Christopher Columbus ever sailed the ocean blue, a new study suggests. Scientists have examined 1,000-year-old Peruvian bones mysteriously infected with TB—500 years before the arrival of Spaniards, who are historically blamed for bringing TB to the New World, Nature ... More »

New Heart Disease Culprit: Ramen?

Study examines South Korea's intake—the highest in the world

(Newser) - Think of this the next time you slurp a cheap cup of hot ramen noodles: It could be linked to heart disease, especially if you're a woman, the AP reports. A new American study of South Korea's ramen consumption examined the diets of 10,700 people aged 19... More »

Skull Shapes 'Feminized' About 50K Years Ago

Smaller brows, less testosterone helped us advance: study

(Newser) - Hope you're sitting down, gentlemen: A new study says that homo sapiens made a huge leap in abstract and symbolic thought 50,000 years ago because their skull-shape "feminized" and testosterone levels went down, Pacific Standard reports. Experts at Duke University analyzed over 1,400 modern and ancient... More »

How Bee Venom Might Fight Cancer

Researchers use synthetic form to safely attack tumors

(Newser) - Locked within the honeybee’s painful sting is a toxin that could fight cancer, CNN reports. Though in its early stages, research shows that venom from bees, snakes, and scorpions can stop the growth of cancer cells. University of Illinois scientist Dipanjan Pan has taken the research one step further... More »

More Unmarried Women Over Age 35 Having Babies

But fewer unwed women overall are having kids, says CDC

(Newser) - Although the birth rate for unmarried women has been slowly declining, middle-aged American women aren't waiting to tie the knot before having kids. According to recent CDC data, birth rates for unmarried females between the ages of 35 and 39 rose a substantial 48% between 2002 and 2012, reports... More »

Older Adults Think Better in the Morning

People 60 to 82 did best on cognitive tasks before 10:30am

(Newser) - Older adults who want to take a crack at the Sunday Times crossword or try a Food Network recipe may want to do it first thing in the morning. A small study by Canadian researchers and published in the journal Psychology and Aging found that adults between the ages of... More »

Newborns' Brains Grow 1% a Day

Rate slows down after initial burst in early weeks

(Newser) - The first study of its kind shows that newborns' brains grow fast—figure a staggering 1% a day immediately after birth, though it slows to about half that rate by the end of three months. Using MRI scans of 87 newborns' brains, researchers discovered that the first weeks of life... More »

Almost 10% of Cancer Survivors Still Smoke: Study

83% of those who keep puffing away smoke an average 15 cigarettes daily

(Newser) - It's been well documented how smoking wreaks havoc on your body, with tobacco use upping the risk for a variety of cancers—lung, bladder, esophagus, larynx, pancreas, and more—and causing almost one in five deaths in the US and 30% of all cancer deaths, according to the American... More »

Kinder, Gentler Humans Built Modern Culture

Study finds link between lower testosterone, evolutionary jump

(Newser) - Maybe all mankind needed to become more civilized was a kinder, gentler touch, suggests a study out of the University of Utah and Duke University. The new research now links a drop in testosterone to our ancestors' sudden jump into civilized behavior about 50,000 years ago. This is when... More »

Mammoths and Mastodons Stuck Close to Home

Study of ancient teeth reveal surprising clues about how and where they lived

(Newser) - Mr. Snuffleupagus and friends didn’t much like to leave home—at least not the ones that lived in what is now Ohio and Kentucky, a University of Cincinnati study reveals. Researchers had long believed mammoths and mastodons were nomadic, but their teeth tell a different story. Mammoths ate grasses... More »

Moon May Hold Clues to Earth's Ancient Past

Study says fossils from Earth could survive the trip via meteor

(Newser) - Might the moon be able to shed some light on the origins of life on Earth? A new study out of the University of Kent opens the possibility that the moon could be littered with ancient fossils from our planet, reports New Scientist . No such fossil has been found to... More »

Tree Rings Solve Mystery of Old World Trade Center Ship

Study shows it got built in Philadelphia about 1773

(Newser) - A mystery ship unearthed during construction of the new World Trade Center site isn't so much of a mystery anymore. A new study based on analysis of tree rings in its wood reveals that the ship likely got built in 1773 in Philadelphia—and with the same white oak... More »

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