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Tired of missing Science AMAs? Message u/ScienceAnnouncements to add your username to r/science's AMA Mailer!
30584
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%.
1957
Scientists create world’s first ‘molecular robot’ capable of building molecules
404
A study on campus Greek life found that joining a fraternity lowered GPA by 0.25 points but boosted future income by 36%
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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.
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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.
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Increasing atmospheric humidity and CO2 concentration alleviate forest mortality risk
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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.
26
Jellyfish Don't Have Brains, But They Do Sleep
3
Cargo ships are triggering more lightning storms at sea.
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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.
295
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.
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.
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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.
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Wide-Faced People May Have A Higher Sex Drive
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Twin study elucidates environmental, genetic contributions to mouth microbiome and oral health
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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.
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Study Reveals the Desire to Drink Alcohol at Night Is Due to Our Brain's Immune System
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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.
25
Dogs Recognize Themselves in Test Based on Smell, Not Sight
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
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Poliovirus kills off cancer cells, stops tumor regrowth
3174
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.
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Seasonal variation in nutrient utilization shapes gut microbiome structure and function in wild giant pandas
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A remarkably preserved 49,000-year-old skeleton shows that Neanderthal kids may have have grown slowly, like us
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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
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Your Brain Sees Faces, Even When You Don't
143
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!
22
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.
23
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.
53
Drinking non-cow’s milk linked with being shorter
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Ultra-light Aluminum: Chemists Report Breakthrough in Material Design (metastable/lightweight crystal structure)
37
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.
52
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.
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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!
23
The oldest record of scoliosis has been discovered in a Permian aquatic reptile from Brazil.
1189
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.
9
Creation of single-photon entangled states around rotating black holes
1991
People significantly overestimate how noticeable their embarrassing behaviors are to others
21
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
4648 remphos Good old fungi! I knew you guys could do it! I wonder if we can isolate the genes responsible for these enzymes and maybe put them into other fungi, if that wouldn't cause other problems somehow.
471 mvea Journal reference: Khan, S., et al., Biodegradation of polyester polyurethane by Aspergillus tubingensis, Environmental Pollution (2017), http://dx.doi.org/10.1016/j.envpol.2017.03.012 Link: http://www.sciencedirect.com/science/article/pii/S0269749117300295?via%3Dihub Highlights • Aspergillus tubingensis was isolated, identified, and found to degrade polyurethane (PU). • The SEM and ATR-FTIR results clearly showed the degradation on the surface of PU. • Esterase and lipase activities were determined in the presence of different supplements to medium. • This is the first report showing A. tubingensis capable of degrading PU. Abstract > The xenobiotic nature and lack of degradability of polymeric materials has resulted in vast levels of environmental pollution and numerous health hazards. Different strategies have been developed and still more research is being in progress to reduce the impact of these polymeric materials. This work aimed to isolate and characterize polyester polyurethane (PU) degrading fungi from the soil of a general city waste disposal site in Islamabad, Pakistan. A novel PU degrading fungus was isolated from soil and identified as Aspergillus tubingensis on the basis of colony morphology, macro- and micro-morphology, molecular and phylogenetic analyses. The PU degrading ability of the fungus was tested in three different ways in the presence of 2% glucose: (a) on SDA agar plate, (b) in liquid MSM, and (c) after burial in soil. Our results indicated that this strain of A. tubingensis was capable of degrading PU. Using scanning electron microscopy (SEM), we were able to visually confirm that the mycelium of A. tubingensis colonized the PU material, causing surface degradation and scarring. The formation or breakage of chemical bonds during the biodegradation process of PU was confirmed using Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) spectroscopy. The biodegradation of PU was higher when plate culture method was employed, followed by the liquid culture method and soil burial technique. Notably, after two months in liquid medium, the PU film was totally degraded into smaller pieces. Based on a comprehensive literature search, it can be stated that this is the first report showing A. tubingensis capable of degrading PU. This work provides insight into the role of A. tubingensis towards solving the dilemma of PU wastes through biodegradation.
663 BRMC888 Can the fungus be bred and used on a mass scale to break down plastics or is this not feasible? Also is the broken down plastic perfectly safe or does it still present problems?
255 7LeagueBoots Every few years another species of bacteria or fungus is found that breaks down plastics. Bacteria: - *Ideonella sakainesis* eats PET plastics 2016 http://science.sciencemag.org/content/351/6278/1154 - *Flavobacterium* has been known to degrade nylon since 1975 1975 https://www.jstage.jst.go.jp/article/bbb1961/39/6/39_6_1219/_article 2007 https://www.ncbi.nlm.nih.gov/pubmed/17512009 - unspecified marine microbes 2011 http://www.nature.com/news/2011/110328/full/news.2011.191.html - *Enterobacter asburiae* and a *Bacillus sp.* taken from waxworm guts break down polyethylene 2014 http://pubs.acs.org/doi/abs/10.1021/es504038a - unspecified soil bacteria from the Frasier river area break down phthalates which are used in making some plastics - Ted talk 2012 https://www.ted.com/talks/two_young_scientists_break_down_plastics_with_bacteria/transcript?language=en - *Pseudomonas spp* break down LDPE - paper from 2012, but known from at least 2008 2012 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3460136/ - *Phanerochaete chrysosporium*, *Pseudomonas putida*, and *Sphingomonas macrogoltabidus* degrade HDPE 2013 http://jes2s.com/Broshkevitch_et_al.html Fungus: - *Pestalotiopsis microspora* and *Schizophyllum commune* break down PUR plastics and are edible 2011 http://aem.asm.org/content/77/17/6076.full - *Pleurotus ostreatus* breaks down oxo-biodegradable (D2W) plastic *without* pre-treatment 2014 http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0069386 There are a bunch more cases, but I think those references are enough to make the point that this is not a unique discovery. I very much hope some of these wind up being able to be used to break down plastics in an industrial capacity, but so far that has eluded us.
318 TheAtomicOption if you have enough of a substrate laying around, eventually something's going to evolve a way to eat it.
662 Sciencetist Do these scientists keep losing it, or something? They seem to "find" this stuff again once every 6 months
38 itsfiguratively It's a shame this stuff also devastates beehives. Solving one problem by creating another.