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173
Tired of missing Science AMAs? Message u/ScienceAnnouncements to add your username to r/science's AMA Mailer!
32120
Largest study on physical activity involving 130,000 people in 17 countries showed that household chores such as vacuuming, or walking to work, provided enough exercise to protect the heart and extend life, with 30 minutes of physical activity five days a week reducing the risk of death by 28%.
2091
Scientists create world’s first ‘molecular robot’ capable of building molecules
648
When a child sees one of his or her parents arguing with the other in a destructive way, it can take a toll on how emotionally secure the child feels. But it is okay if your kids hear their parents arguing, as long as they’re handling disagreements in a constructive way, a new study suggests.
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The nearly 900 giant stone statues discovered by the first Europeans to land on Easter Island seemed at odds with the 1,500 to 3,000 found living there. A new detailed study of the farming potential of the Island suggests it could have sustained 17,500 people at its peak.
84
Prior research has long shown that women are less risk tolerant in their financial decisions than men. New research shows that men and women do not think about investment risks differently. Instead, income uncertainty affects them differently, which leads to differences in risk tolerance.
13
Increasing atmospheric humidity and CO2 concentration alleviate forest mortality risk
9
Cargo ships are triggering more lightning storms at sea.
53828
Babies can learn that hard work pays off. MIT researchers found that babies who watched an adult struggle at two different tasks before succeeding tried harder at their own difficult task, compared to babies who saw an adult succeed effortlessly.
27
Jellyfish Don't Have Brains, But They Do Sleep
25
Studies have shown that air pollution can have negative effects on cardiovascular health and life expectancy. Now new research indicates that it is also harmful to the kidneys.
15
New Australian-led research has confirmed that smartphone apps are an effective treatment option for depression, paving the way for safe and accessible interventions for the millions of people around the world diagnosed with this condition.
296
Multiple sclerosis can be inhibited or reversed using a novel gene therapy technique that stops the disease’s immune response in mouse models, University of Florida Health researchers have found.
32
A new study demonstrates the strong influence ancestry plays in Americans' interpretation of whether someone is black, white or multiracial, highlighting differences in the way race is socially constructed in the U.S. compared to other parts of the world.
29
Wide-Faced People May Have A Higher Sex Drive
44
To find ancient life on Mars, new research says that scientists should look for vanadium. During fossilization, this element often replaces magnesium in chlorophyll, the pigment needed for photosynthesis.
7
Twin study elucidates environmental, genetic contributions to mouth microbiome and oral health
60
Study Reveals the Desire to Drink Alcohol at Night Is Due to Our Brain's Immune System
6
Forest fires in Southeast Asia during the El Niño droughts of 2015 caused considerable disruption to the biodiversity of the region due to the smoke-induced ‘haze’ they created, according to new research
72
Engineers have devised a framework for identifying key patterns that precede an extreme event like a rogue wave or instability inside a gas turbine. The method may help predict hotspots of instability affecting climate, aircraft performance, and ocean circulation.
27
Dogs Recognize Themselves in Test Based on Smell, Not Sight
19173
Poliovirus kills off cancer cells, stops tumor regrowth
3172
Scientists have engineered an antibody that attacks 99% of HIV strains and can prevent infection in primates, a collaboration between the US National Institutes of Health and pharmaceutical company Sanofi.
23
Seasonal variation in nutrient utilization shapes gut microbiome structure and function in wild giant pandas
68
A remarkably preserved 49,000-year-old skeleton shows that Neanderthal kids may have have grown slowly, like us
43
Study finds evidence that lower cigarette prices are associated with increased infant mortality, and higher prices are associated with decreased mortality; Researchers suggest lawmakers consider taxation to handle higher rates of infant deaths in certain areas
25
Your Brain Sees Faces, Even When You Don't
145
Science AMA Series: Hi Reddit, I’m Sarah Hörst, Professor of Planetary Science at Johns Hopkins University, here to talk about the outer solar system (especially Titan). Ask me anything!
23
When living systems are smaller than the wave length of visible light, scientists can use cutting edge animation to tell the story of what's going on.
22
Scientists have created a simple-to-produce device that uses sound waves to store quantum information and convert it from one form to another, all inside a single, integrated chip.
59
Drinking non-cow’s milk linked with being shorter
19
Ultra-light Aluminum: Chemists Report Breakthrough in Material Design (metastable/lightweight crystal structure)
38
Prozac (fluoxetine) can block the formation of bacterial biofilms on bladder catheters. The antidepressant can scramble efflux pumps in bacteria, meaning that it may eventually be re-purposed as an antibacterial agent.
53
New biomaterial could replace plastic laminates, greatly reduce pollution - An inexpensive and biodegradable biomaterial, comprised of cellulose pulp and chitin, can be used to sustainably replace plastic barrier coatings in packaging and many other applications.
10351
Science AMA Series: We are a group pf researchers that uses the MMO game Eve Online to identify Exoplanets in telescope data, we're Project Discovery: Exoplanets, Ask us Anything!
22
The oldest record of scoliosis has been discovered in a Permian aquatic reptile from Brazil.
11
Creation of single-photon entangled states around rotating black holes
1185
Scientists just discovered the first animal (the upside-down jellyfish Cassiopea) without a brain that sleeps. The results suggest that sleep is deeply rooted in our biology, a behavior that evolved early in the history of animal life and has stuck with us ever since.
1993
People significantly overestimate how noticeable their embarrassing behaviors are to others
20
Researchers develop a nano-composite foam for football helmets that can monitor details of head impacts in real-time; This may allow athletic coaches to monitor their players and watch for possible concussions
6
Poisonous frogs produce a powerful neurotoxin that protects them from predation. Researchers have wondered why the poison doesn't hurt the frogs who make it. New data suggests complementary mutations were selected for in the nicotinic acetylcholine receptor.
17 [deleted] [removed]
10 hierophants I was quite looking forward to the article about the Great Barrier Reef, the thumbnail is a lie.
9 Flight714 They apparently didn't normalize for socioeconomic status or IQ (or whatever the best indicator of overall intelligence that is currently known), which are two of the main variables that are usually accounted for in a race comparison study: especially as a prospective employer is more likely to hire upper-class people, and smarter people.
8 Removed_Californian How is discrimination defined? What is their metric I guess.
7 cavemanben I have several issues with this "study". Why is this in r/science? It was done with the direct intent of finding some evidence of discrimination. The methods with which they've gathered the data is suspect. > These studies include both resume audits, in which fictionalized resumes with distinct racial names are submitted online or by mail (e.g., ref. 19), and in-person audits, in which racially dissimilar but otherwise matched pairs of trained testers apply for jobs (e.g., ref. 20). and > 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. So they only targeted "ethnic" sounding names and the data was gathered from studies **since** 1989. If the data has been collected over a 30 year period and was filtered by names rather than a persons actual race, the "evidence" can't be used to say, "Now in 2017, whites receive 36% more callbacks than blacks." That finding is absolutely not what they uncovered or could logically conclude. Clearly this study was done in order to provide "evidence" of a false narrative that gives credence to ethnic and gender studies "scientists" that have nothing better to do with their time than claim victimhood and possible justify their tragic mistake of choosing a non-STEM field to pursue as a career.
2 Inverted_TRex So how do they know that it is purely from discrimination as to why certain groups got more callbacks? Seeing as how that's the only thing the measured from the study it seems like there could be other causes than discrimination, or even a combination of discrimination and others. Seems like a big assumption to just say that it is from discrimination without conducting further studies.
2 NotYourNat So, are we ignoring the coral photo?
0 alfreeland This year's data will catch em up.
-6 deaddonkey Wow. Considering the stance of pop culture and the media on racial issues today, you'd think we live in a post-racism world where all the remaining conflicts are about petty aspects of a white privilege or LBGT issues. Bit ironic that discrimination is functionally at the same level as the Reagan years.