Science AMA Series: We are Professor Tim Lenton and Dr Damien Mansell from the University of Exeter, here to answer your questions on Solutions to Climate Change. AMA!
Science AMA Series: I’m Albert Lau and I use supercomputers to simulate molecular machines in action, such as those in the brain. My research can help scientists understand how small molecules like neurotransmitters locate their targets. AMA!
People with more wealth tend to report being happier with life, according to a new psychological study of more than 4,000 millionaires. The study also found evidence that millionaires who earned their wealth were happier than those who inherited it.
Infection outbreaks at hospitals could be reduced by copper-coated uniforms - Doctors, nurses and healthcare professionals could soon be wearing uniforms brushed with tiny copper nanoparticles to reduce the spread of bacterial infections and viruses at hospitals.
New blood test can detect autism in children. Researchers at the University of Warwick discover link between autism and damage to proteins in blood plasma.
AAAS AMA: Hi, we’re researchers from Google, Microsoft, and Facebook who study Artificial Intelligence. Ask us anything!
A new study finds that farming crops with crushed rocks could help to improve global food security and reduce the amount of CO2 entering the atmosphere. The fast-reacting silicate rocks capture CO2 and give increased protection from pests and diseases while restoring soil structure and fertility.
Teens work very hard to create a favorable online image through careful selection of which photos, activities and links to post on Facebook and Instagram, according to a recent study. Content that makes them appear interesting, well-liked and attractive to their friends and peers is a primary goal.
Archeologists find mutilated 8,000-year-old skulls, some possibly mounted on stakes. While plenty of cultures throughout the world have placed skulls on stakes, either as trophies or a “back off” signal to enemies, this would be the earliest known example found in Europe.
Our knowledge of dinosaur evolution has completely changed in the last 10 years, and likely will in the next 10 again too.
Did humans domesticate themselves? Human ‘self-domestication’ is a hypothesis that states that among the driving forces of human evolution, humans selected their companions depending on who had a more pro-social behavior. Researchers found out new genetic evidence for this evolutionary process.
Study dispels notion that social media displaces human contact - A new study shows no evidence for the proposition that social media crowds out face-to-face communication with those who ought to matter most, our close friends and family members, debunking the social displacement hypothesis.
Franzmeier et al. show that greater left frontal hub connectivity within the fronto-parietal control network is associated with greater resilience of cognitive performance during early stages of autosomal dominant & sporadic Alzheimer’s disease.
Unconventional superconductor may be used to create quantum computers of the future
Global Demand for Natural Resources Eliminated More Than 100,000 Bornean Orangutans Between 1999 and 2015
Air Pollution from New and Shutdown Industries, a Big Danger to Public Health
Humans will actually react pretty well to news of alien life. Across multiple studies, researchers found that reactions were significantly more positive than negative, and more reward vs. risk oriented.
AAAS AMA: Hi, we're scientists from NOAA and research universities who analyze the sources of pollution and recently published a study in Science Magazine. Ask us anything!
Dispersal of Fish Eggs by Water Birds – Just a Myth?
CRISPR hack transform?s cells into data recorders
A team of international researches finds that Oganesson doesn't behave like other noble gasses.
Making gene editing more precise
Learning Plants (Pavlov for Peas)
New studies zero in on roots of depression and why ketamine reverses it
New research on English Football suggests darker skin toned soccer players occupy positions thought to require athleticism whereas lighter skin toned players occupy positions requiring creativity and organizational skills
Induced Pluripotent Stem Cell Based Vaccines Elicit Anti-tumor Responses In Vivo
Peanut oral immunotherapy strongly desensitizes children and young adults to peanut allergy in a randomized, phase 2 trial. Results from a phase 3 trial are expected imminently.
Raw chicken link to dog paralysis: Investigation of the Role of Campylobacter Infection in Suspected Acute Polyradiculoneuritis in Dogs
Rescue of Fragile X Syndrome Neurons by DNA Methylation Editing of the FMR1 Gene
Glacigenic sedimentation pulses triggered post-glacial gas hydrate dissociation
Hi, we’re scientists who are scouring the night sky for exoplanets, and then trying to determine if any might reside in the “habitable zones” of their stars. Ask us anything!
Like the horse of Troy, scientists have developed a way to sneak synthetic cells right into tumor tissue, where they then begin producing cancer-fighting proteins from the inside. The technique was tested in both cell cultures and in mice, and found to be an effective treatment in both cases.
Researchers have developed a printing technique using cells and molecules normally found in natural tissues to create constructs that resemble biological structures, embedded in an ink similar to their native environment, that mimic body parts for tissue engineering or regenerative medicine.
A strip of paper can now indicate presence of pathogens, tumor DNA or any genetic signature of interest. 100-fold greater sensitivity, the ability to detect multiple targets at once, and other new features further enhance SHERLOCK's power for detecting genetic signatures- Broad institute, Harvard
"Our models indicate that between 1999 and 2015, half of the orangutan population (~100,000) was affected by logging, deforestation, or industrialized plantations. Although land clearance caused the most dramatic rates of decline, it accounted for only a small proportion of the total loss."
Women who work as cleaners or regularly use cleaning sprays or other cleaning products at home appear to experience a greater decline in lung function over time than women who do not clean, according to new research published in the American Journal of Respiratory and Critical Care Medicine.
Scientists Create a New Form of Light by Linking Photons. Photons typically don’t interact, but physicists bound three together in the lab. This new form of light could someday be used to build light crystals that could lead to intriguing new ways of communicating and computing
Study shows hormone ghrelin affects exercise endurance, food intake post-workout
System draws power from daily temperature swings - Technology developed at MIT can harness temperature fluctuations of many kinds to produce electricity, as reported in Nature Communications.
Babies can spot language, even when it’s not spoken
A free ride with Lyft didn't reduce the number of skipped doctor's appointments among Philly's Medicaid population, according to a study from UPenn. Further, just 85 of 288 people who answered reminder phone calls accepted the rides in the first place.
73% of fish in northwest Atlantic have microplastics in their gut
115 SirT6 Hmmm. I'm not in love with the methodology or the dataset the authors use to reach the conclusion that there are no changes in racial discrimination in hiring in the US over the past 25 years. Let's [look at the data first]( The authors collected 24 studies relating to hiring discrimination and plotted the discrimination quotient over time. The slope of the trend line is relatively flat, leading to the conclusion that racial discrimination in hiring hasn't changed over the past 25 years. But looking at the data, I have a hard time getting on board with that conclusion. For arbitrary reasons, the study began the analysis in 1989. There are three data points here that are anchoring the trend line. Then there is a >10 year gap before the next study. These studies from the early 2000s all showed higher levels of discrimination. If we remove the 1989 studies, or just begin the analysis at couple of years later, we would reach the opposite conclusion - that racial discrimination in hiring practices has gone down over time! Also, just sanity testing the data makes me wonder how reliable all of these studies are. If we look at the studies from the 1970s, we'd conclude that racial discrimination in hiring is half of what it is today. That fails plausibility testing in my mind. Further, looking past the data, the methodology doesn't seem great. Here's how they collected the studies: > First, we identified all existing studies, published or unpublished, that use a field experimental method and that provide contrasts in hiring-related outcomes between equally qualified candidates from different racial or ethnic groups. Second, we coded key characteristics of the studies into a database for our analysis based on a coding rubric. This produced 24 studies containing 30 estimates of discrimination against African Americans and Latinos since 1989, together representing 54,318 applications submitted for 25,517 positions. Finally, we performed a random-effects meta-regression to identify trends over time. I am not a fan of including unpublished studies here. Crap in, crap out. I'd want to see some sensitivity analysis on what would happen if certain "low quality" studies were removed from the analysis. Ultimately, I have a hard time drawing any conclusions about trends in hiring practices and racial discrimination from this paper. The data looks messy, and the methods seem dodgy. This isn't a strike against these authors, in particular. Most meta-analyses suffer from similar problems, and should be read with extra caution.
8 oinklittlepiggy question. how can one assume that hiring policies are discriminatory? I take it this is assumed, yes? or is there evidence that indicates this was discrimination? Wouldn't these same data sets show anything you really wanted them to? Such as: no change in potential employability among racial categories since 1989?
2 blueliner17 Does the title contradict itself or am I reading it wrong?