Score
Title
306
Tired of missing Science AMAs? Message u/ScienceAnnouncements to add your username to r/science's AMA Mailer!
23965
Germany's wolf population on the rise, new data shows
2400
By the 2030s, every second summer over almost all of the entire Northern hemisphere will be hotter than any record-setting hot summer of the past 40 years. By 2050, virtually every summer will be hotter than anything we've experienced to date.
37996
Living in the fallout zone from a nuclear disaster would be no worse for our health than living in London, due to its scale of pollution.
190
The most dramatic divergence between humans and other primates can be found in the brain. Our brains are three times larger, have many more cells, and one gene involved in the production of dopamine was highly expressed in human neocortex and striatum but absent from the neocortex of chimpanzees.
22985
Super recognizers, who have an uncanny ability to recognize faces, pay greater attention to the nose than other people
26
Drilling Reawakens Sleeping Faults in Texas, Leads to Earthquakes
187
The Big Vitamin D Mistake - statistical error discovered RDI set 3-4 times to low.
102
Lightning makes new isotopes
955
Introverts may miss leadership chances because they overestimate how stressful it will be
114
Bones show Dolly’s arthritis was normal for a sheep her age
17
Cinnamaldehyde, an essential oil that gives cinnamon its flavor, may improve metabolic health. The ingredient induces fat cells, or adipocytes, to start burning energy through a process called thermogenesis.
2399
Smart people have better connected brains - In intelligent persons, certain brain regions are more strongly involved in the flow of information between brain regions, while other brain regions are less engaged.
11
Map of the 11 worldwide Hydroacoustic sensors, of which some (quite possibly) detected the Argentinian submarine explosion.
12
Artificially lit surface of Earth at night increasing in radiance and extent
36
Avatar therapy 'reduces power of schizophrenia voices': Confronting an avatar on a computer screen helped patients hearing voices to cope better with hallucinations. Patients who received this therapy became less distressed and heard voices less often compared with those who had counselling instead.
239
A population of finches on the Galapagos has been discovered in the process of becoming a new species
5
Scientists have discovered that flies carry more diseases than suspected. The house fly and the blowfly together harbour more than 600 different bacteria, according to a DNA analysis.
43
A highly ambitious collaborative project to map all the cells in the human body is officially underway
8
How Asian nomadic herders built new Bronze Age cultures
8
Migratory whooping cranes choose long-term partners years before breeding new study finds
1139
Study finds that fatty acids released into the air from cooking with deep fryers may help form clouds that limit global warming
9
Scientists at EPFL have discovered a new toxic form of Tau that forms as a result of its interaction with cell membranes. The research is published in Nature Communications and provides novel insights into possible mechanisms by which this protein moves in the brain and kills neurons.
115
A study shows how both hemispheres of our brain work together to understand puns. Also explains why some people seem to have no sense of humour.
4
Molecular and cellular reorganization of neural circuits in the human lineage[WHAT MAKES US HUMAN: DOPAMINE INJECTION BOOSTED OUR BRAINS TO SET US APART FROM CHIMPS AND MONKEYS]
380
The plague-causing bacterium may have first come to Europe with the large-scale migration of steppe nomads in the Stone Age, millennia before the first known historical epidemics. Findings also confirm plague bacteria undergoing genetic mutations related to its virulence at the time of its arrival.
3
Evidence of molting and the function of “rock-nosing” behavior in bowhead whales in the eastern Canadian Arctic[Whales Have An Exfoliation Ritual To Keep Their Skin Fresh]
110
Witnessing morning incivility darkens your experience of the whole day
4
The Big Vitamin D Mistake
14
The human genome project sequenced our DNA to give a “parts list” for a person. Now, researchers are pushing that understanding further by mapping out the tissue-specific expression of these genes in humans (44 tissues and 449 tissue donors)
2
Prions Found in Skin of Creutzfeldt-Jakob Patients
1
New way to write magnetic info could pave the way for hardware neural networks
1
Bowhead whales come to Cumberland Sound in Nunavut to exfoliate
0
Deep fat fryers may help form cooling clouds
596
New model explains expansion of the universe and rotation speeds of galaxies without dark matter and dark energy
6
Reddit in research - a content analysis of questions about gout posted on /r/gout
695
Scientists created a mini biohybrid robot using algae, to travel through people in response to magnetic signals, that could one day carry drugs to specific parts of the body, minimizing side effects. What’s more, the robot—and its magnetic coat—appear to kill cancer cells.
2
Multiplex recording of cellular events over time on CRISPR biological tape[World’s Smallest Tape Recorder Is Built From Gut Bacteria/Microbes]
407
People who think they exercise less than their peers die earlier, regardless of their actual activity levels
0
IceCube turns the planet into a giant neutrino detector
0
Soft robotic ventricular assist device with septal bracing for therapy of heart failure
113 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](http://www.pnas.org/content/early/2017/09/11/1706255114/F1.expansion.html). 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?