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Science AMA Series: I’m Michael Siegel, a professor of community health sciences at Boston University’s School of Public Health. I do research on firearm violence. AMA!
24013
Half the Coral in the Great Barrier Reef Has Died Since 2016 (paper sourced in article)
1158
Doctors who prescribe homeopathy ignore other medical guidelines, finds new study which looked at all the 7618 primary care practices in England.
1122
MIT engineers have developed a continuous manufacturing process that produces long strips of high-quality graphene. The team’s results are the first demonstration of an industrial, scalable method for manufacturing high-quality graphene.
27840
New drug uses antibodies to stop chronic migraines by blocking the neural pathway that sends pain signals to the brain during a migraine. Phase III trials on about 1,000 subjects are complete now and there are already plans for it to be approved by the FDA.
629
Due to climate change the niche of giant trees is projected to increase by ~4 million km2 globally - "Our results imply that strategic management could in principle facilitate the expansion of giant forests, securing critically endangered biodiversity as well as carbon storage."
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Alzheimer’s Disease Starts in Childhood, with Symptoms Found in Babies Less Than a Year Old study in Metropolitan Mexico City finds . APOE4 carriers have higher suicide risk and higher odds of reaching NFT stage V at ? 40 years of age
102
A rare mutation among the Bajau people lets them stay underwater longer: natural selection at the PDE10A gene has increased spleen size in the Bajau, providing them with a larger reservoir of oxygenated red blood cells.
373
Oil spills could be soaked up by a new floating substance that combines waste from the petroleum industry and cooking oil. The new polymer acted like a sponge to remove crude oil and diesel from seawater. The polymer can be squeezed to remove the oil and then reused.
1627
Americans waste 150,000 tons of food each day – equal to a pound per person. USDA research shows people with healthy diets rich in fruit and vegetables are the most wasteful.
109
Researchers found that simply being told that a performer is a professional or a student changes the way the brain responds to music. They also found that overcoming this bias took a deliberate effort.
105
Cold Temp Exposure Causes Epigenetic Changes in Fat Cells
78
Superionic ice has been created in the lab for the first time. The ultra-conductive version of ice, which accounts for 60% of Uranus and Neptune, was formed by compressing ice to 25,000 times the atmospheric pressure felt at sea level. The resulting ice was sixty times denser than regular water.
76
Bold and Aggressive Behavior Means Birds Thrive in Cities
109
A stunning cure for one of the world's most devastating blood diseases: A pioneering gene therapy vanquishes beta thalassemia in a pivotal clinical trial.
21
A prototype early warning system for the four most common types of cancer makes a visible mole appear on the skin when calcium levels indicate a tumor has developed.
25251
Strong carbon fiber artificial muscles can lift 12,600 times their own weight - The new muscles are made from carbon fiber-reinforced siloxane rubber and have coiled geometry, supporting up to 60 MPa of mechanical stress, providing tensile strokes higher than 25% and specific work of up to 758 J/kg.
42
Male fruit flies enjoy ejaculation. Fly brains showed increased signs of a rewarding experience after ejaculating, even with no females present.
49
Mars' tiny moons (Phobos and Deimos) formed after proto-Mars collided with a dwarf-planet-sized object, finds new study.
3489
Marijuana's effects on young brains diminish 72 hours after use, research says. Findings could be an indication that some of the negative cognitive effects found in previous studies may be due to the residual effects of cannabis or potentially from withdrawal effects in heavy cannabis users.
48
'Exploding Ant' Rips Itself Apart To Protect Its Own
18
New microscope creates 3D movies of cells in living organisms. "It's like Star Trek" say Harvard researchers.
13
In an example of recent human evolution, scientists find free divers from Southeast Asia evolved bigger spleens, thought to give them greater endurance when holding their breaths.
19
Machine Learning algorithm can predict evolution of chaotic models without knowing the equations. This may improve weather prediction some day.
49
Fluorescent silk can kill harmful bacteria as biomedical and environmental remedy
24
Prehistoric humans may have practiced brain surgery on cows
3962
Researchers who found that /r/depression helped redditors improve their emotional state released a new study on long-term effects. They found that members of reddit's mental health communities faced communication challenges, but the subreddits helped them advance their writing.
10
Drowning caused 80% of deaths from Hurricane Harvey. Study finds 78% of those deaths occurred outside zones designated as being at higher risk for flooding. US authorities outline floodplains for 100 and 500 year floods that had a 1% and 0.2% probability respectively of occurring in any given year.
3072
'Mono' virus linked to 7 serious diseases, including lupus, multiple sclerosis, arthritis, inflammatory bowel disease, celiac disease, and type 1 diabetes. Combined, these diseases affect nearly 8 million people in the U.S.
6
Enlarged spleen key to diving endurance of ‘sea nomads’
7
Using human stem cells, researchers create 3-D model of the brain to study a mutation tied to schizophrenia, bipolar disorder, and depression
8
A new imaging technique called Adaptive Optical Lattice Light-Sheet Microscopy has captured cellular dynamics in living organisms with unprecedented detail.
4
New Study Says Ancient Humans Hunted Big Mammals To Extinction
7
A new study has confirmed that Hans Asperger, the Austrian pediatrician for whom a form of autism is named, collaborated with the Nazis and actively assisted in the killing of disabled children
1325
In a series of experiments, researchers found people at higher elevations in an office building were more willing to take financial risks. This effect vanished when participants were informed that floor level influences behavior, and when people could not see that they were on a higher floor level.
9
A randomized trial shows the critical impact of a face-to-face doctor visit for patient perception of compassion, communication, professionalism.
24
Scientists (EPFL) have examined a slice from a meteorite that contains large diamonds formed at high pressure. The study shows that the parent body from which the meteorite came was a planetary embryo of a size between Mercury to Mars. The discovery is published in Nature Communications.
5
Religiosity is generally tied to reduced suicide risk, but the opposite may be true for LGBT adults. Faith-based partners in suicide prevention and intervention services “should be willing and equipped to assist all people who seek their services, regardless of sexual orientation,” the authors write
8
When threatened by other insects, minor workers ants of species Colobopsis explodens can actively rupture their body wall. Apart from leading to the ants' imminent death, the "explosion" releases a sticky, toxic liquid from their enlarged glands, in order to either kill or hold off the enemy.
3
This new microscope makes movies from inside living cells (paper sourced in article)
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Fertility preservation in testicular cancer – predictors of spermatogenesis
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61 mvea The post title is a copy and paste from the first and sixth paragraphs of the linked popular science article here : > Some young adults in the United States experienced an increase in biological stress after Donald Trump won the 2016 presidential election, according to new research that appears in the journal Psychoneuroendocrinology. The study measured levels of the stress hormone cortisol before, during, and after the election. > The researchers examined 286 young adults (18-25 years old) from November 6 to 10 in 2016. The participants completed nightly surveys measuring their stress levels, emotions, activities, and election involvement. They also provided three salivary samples per day, which were used to measure their cortisol levels. Journal Reference: Lindsay T. Hoyt, Katharine H. Zeiders, Natasha Chaku, Russell B. Toomey, Rajni L. Nair, Young adults’ psychological and physiological reactions to the 2016 U.S. presidential election, Psychoneuroendocrinology, 2018, ISSN 0306-4530, DOI: https://doi.org/10.1016/j.psyneuen.2018.03.011. Link: http://www.sciencedirect.com/science/article/pii/S0306453017315214 Highlights • Major sociopolitical events can affect individuals’ psychology and physiology. • Negative mood increased before the election and peaked on election night. • Stress responses across election week were largely dependent on individual factors. Abstract > Elections present unique opportunities to study how sociopolitical events influence individual processes. The current study examined 286 young adults’ mood and diurnal cortisol responses to the 2016 U.S. presidential election in real-time: two days before the election, election night, and two days after the election of Donald Trump, with the goal of understanding whether (and the extent to which) the election influenced young adults’ affective and biological states. Utilizing piecewise trajectory analyses, we observed high, and increasing, negative affect leading up to the election across all participants. Young adults who had negative perceptions of Trump’s ability to fulfill the role of president and/or were part of a non-dominant social group (i.e., women, ethnic/racial minority young adults) reported increased signs of stress before the election and on election night. After the election, we observed a general “recovery” in self-reported mood; however, diurnal cortisol indicators suggested that there was an increase in biological stress among some groups. Overall, findings underscore the role of macro-level factors in individuals’ health and well-being via more proximal attitudes and physiological functioning.
78 small_loan_of_1M A lot of this is social environment. I personally didn't (and still don't) think this was nearly as much of a disaster as people were making it out to be, but that didn't stop me from getting stressed. It turns out that being surrounded by people who are freaking out puts you on edge, regardless of your personal feelings on the matter.
63 perhapsnew From my observations, the stress is largely induced by MSM, actors, political figures, shows, etc. Is there any correlation between certain news sources consuming and the stress? Is there any correlation between being involved in political discussion (for example, amount of comments in social media) and the stress?
8 test6554 Weren't there studies on how the win or loss of someone's preferred athletic team affects their hormones/mood? Is this similar in any way?
9 Gwenbors Sure! One classic example is in the way local officials deliver disaster information to the public. Remaining calm and confident in delivering information to the public correlates with a confidence among the public that the disaster can be successfully recovered from. This is also a factor in corporate crisis response. The affective cues with spokesperson behaviors are implicitly communicated to the public. If they seem nervous or anxious, the public gets nervous and anxious, too. On a personal level, there’s also evidence that kids actually learn how to respond to injuries based on parental reactions. Children get upset when they see that mom or dad seems upset. A similar effect occurs with medical doctors. Even before the diagnosis is delivered, patients often feel confident and optimistic based purely on the doctor’s bedside manner, even without a specific prognosis. This isn’t my ideal link, but it’s a decent intro to some of the extant lit. [Emotional Contagion](https://www.psychologytoday.com/us/blog/brain-wise/201606/emotions-are-contagious)
2 tubbernickel Exactly how the the US media monopoly wants you to feel. 21st century propaganda is so much more subtle and effective.
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