AskScience AMA Series: We're the scientists who figured out cutting methane emissions can avoid 0.3°C of global warming by 2045. Ask us anything! |
- AskScience AMA Series: We're the scientists who figured out cutting methane emissions can avoid 0.3°C of global warming by 2045. Ask us anything!
- Water in a vacuum, why does the boiling stop?
- How deep is the sand in the Sahara Desert? What's underneath? Is there a flat surface?
- What will be the flash point of two flammable liquid mixture?
- Simultaneity of the products in a chemical reactions ?
- What is the significance of the different assays in COVID-19 Antibody experiments?
- Do B-cells really generate randomly shaped receptors until a new antigen binds to one of them?
- The Great Lakes are at Historic water levels but Michigan is having drought conditions. How does this happen?
- What portion of the Covid-19 genome encodes for the spike protein?
- When stale, why do crispy/hard food items turn soft, and soft food items turn hard?
- If at the equator the rays of the sun form 90° in equinoxes, does that mean it's hotter around March 21st and September 23rd?
- How do we know the COVID vaccines are effective in an unmasked pre-pandemic environment when the trials and real world studies were conducted in an environment in which people are following guidelines like masking, social distancing, and staying home?
- can anyone provide me the Latest study of SARS-COV-2 on surfaces ? (common surfaces, like plastic, paper, wood)
- Do objects need a "repelling force" as well as an attractive force in order to orbit one another?
- Are bomb blasts shiny?
- Why do diabetic patients have it so worse in COVID infection?
- What happens to the degraded mRNA in vaccines once it's injected?
- Which disease prevents you from getting the Covid-19 vaccine?
- Is graphene really one atom thick?
- If an object is orbiting a star within the radius of its event horizon when the start collapses into a black hole, does the object orbit the black hole inside the event horizon or does it fall into the singularity?
- How can we see people of the light gets interfered by other light?
- I'm an ant on a shaked glass of water. Do i see a scaled down version of shore waves ?
- How long have coronaviruses existed?
| Posted: 17 May 2021 06:16 AM PDT Hi everybody We are the scientists behind a recent UN report on the impacts of methane emissions on climate change around the world. This report is called the Global Methane Assessment and you can download the whole thing here. Here are the headline findings: The Global Methane Assessment shows that human-caused methane emissions can be reduced by up to 45 per cent this decade. Such reductions would avoid nearly 0.3°C of global warming by 2045 and would be consistent with keeping the Paris Climate Agreement's goal to limit global temperature rise to 1.5 degrees Celsius (1.5˚C) within reach. Because methane is a key ingredient in the formation of ground-level ozone (smog), a powerful climate forcer and dangerous air pollutant, a 45 per cent reduction would prevent 260 000 premature deaths, 775 000 asthma-related hospital visits, 73 billion hours of lost labour from extreme heat, and 25 million tonnes of crop losses annually. We are:
Methane doesn't always get the attention that it deserves, so we were pleased to see the NY Times, Reuters, BBC, The Guardian and many others highlighting our report - but now we're here to dive into the details. We'll be on at 17.00 CET (11am ET, 15 UT), ask us anything! Username: /u/CACC_Official [link] [comments]  |
| Water in a vacuum, why does the boiling stop? Posted: 17 May 2021 04:33 AM PDT I have a vacuum chamber that I use for freeze drying. It works really well. Aside from the foods, I have done some tricks for the kids where I put water in a clear glass and put it in the chamber. I turn the machine on and it does what one would expect, after a few minutes as the pressure drops the water begins boiling. But then what happens after a little bit the water stops boiling. Pressure continues to drop. The water just sits there, motionless. If I release the vacuum stir it (maybe it super cooled?) And then try again, I get little to no boiling. I tried it in plastic (less of a smooth surface so perhaps there was more condensation points) but still the same thing, no boiling. When I replace the water with fresh tap water, it will boil again but then do the above. What is going on? I expected the water to boil until gone. [link] [comments]  |
| How deep is the sand in the Sahara Desert? What's underneath? Is there a flat surface? Posted: 16 May 2021 11:26 AM PDT |
| What will be the flash point of two flammable liquid mixture? Posted: 16 May 2021 11:32 PM PDT For example, flash point of the component A = -10 degree, component B = 35 degree. Does it depend on mixing ratio? [link] [comments]  |
| Simultaneity of the products in a chemical reactions ? Posted: 17 May 2021 04:03 AM PDT Hi, I'd like to know if during a combustion, the products come out one at a time or is it simultaneous ? Let's say CH4 + 202 -> CO2 + 2H2O Would the two products be created at the same time or would one come out before the other ? [link] [comments]  |
| What is the significance of the different assays in COVID-19 Antibody experiments? Posted: 17 May 2021 06:07 AM PDT A recent experiment tested the durability of the mRNA-1273-induced antibodies over time (up to 6 months). The experiment used pseudovirus neutralization, live-virus neutralization, ACE2 Blocking, and binding (S-2P, RBD, Cell Surface) Assays. They had markedly different results. What is the significance of these different measurements? [link] [comments]  |
| Do B-cells really generate randomly shaped receptors until a new antigen binds to one of them? Posted: 16 May 2021 03:44 PM PDT I've been trying to learn how new antibodies are made, and from what it sounds like, B-cells do random gene recombinations so each one has different receptors on the outside. Then, an antigen from a new infection is shown to B-cells until it binds to one, and that cell starts producing the antibodies its unique DNA codes for. That can't really be what happens, right? There are a hundred billion variations of receptor, so does a new antigen really have to be presented to billions of B-cells before a match is found? That seems impossible. [link] [comments]  |
| Posted: 16 May 2021 08:36 AM PDT I live in west Michigan. The news consistently reports that Lake Michigan water levels are at historic highs due to lack of ice formation the previous few winters. The beaches have been majorly eroded because of this. The higher temps seem to fit with this, but the decreased rainfall seems paradoxical to these weather events. Wouldn't high temps lead to more clouds and thus high rainfall? [link] [comments]  |
| What portion of the Covid-19 genome encodes for the spike protein? Posted: 16 May 2021 08:47 PM PDT Im wondering what percentage of the total viral RNA is used in the vaccine. I'm guessing it's small and feel that educating people on the specific fraction may be helpful for vaccine hesitancy [link] [comments]  |
| When stale, why do crispy/hard food items turn soft, and soft food items turn hard? Posted: 16 May 2021 06:06 PM PDT Specifically grain/carb foods, like bread, crackers, etc. An example is a piece of bread, if left out, turns hard. In contrast, cheez-its turn soft. I'm sorry if the flair is inappropriate, it seemed like the best one. [link] [comments]  |
| Posted: 16 May 2021 02:38 PM PDT I know they only have a dry season and a wet season, and that the variation of the subsolar point is very little there, but if rays are perpendicular in equinoxes, won't that actually make temperatures slightly hotter during the equinoxes (more likely the dry season one)? [link] [comments]  |
| Posted: 16 May 2021 09:48 AM PDT |
| Posted: 17 May 2021 12:52 AM PDT i had ordered something from amazon(composition : plastic) and i pretty much sanitized it with dettol(wiped it) and wiped it from water than again from dettol and left it wrapped in a garbage bag(recyclable ones). its been 11 days. and i still fear in opening it tho. so can anyone provide me the latest study of covid-19 on surfaces? i searched on google a lot but almost all the studies are year and a half old. so i would really appreciate it if anyone could help [link] [comments]  |
| Do objects need a "repelling force" as well as an attractive force in order to orbit one another? Posted: 16 May 2021 08:47 PM PDT So this video is about making magnets orbit https://www.youtube.com/watch?v=d2-EqVdaNT4&ab_channel=TheActionLab and in the video, the guy talks about the need for 2 forces for objects to orbit one another, and mentions in space, the "repelling force" is centrifugal force, and then shows a graphic explaining centrifugal force (at around 52 seconds in). Am I crazy or like, is this total BS? I'm only a little bit versed in stuff like this, so I could just be getting confused from the way he's wording it, but isn't centrifugal force not actually a real force, and just what the subject feels as a result of the centripetal force (being gravity)? How does it repel something? Is a repelling force even needed at all to maintain an orbit? And regarding the graphic at 0:52, I feel like this is just blatantly incorrect, for one, shouldnt the velocity vector be tangent to circle he's swinging it in? And I also feel like the only force acting on that ball is the tension from the string, and that he's implying that the centrifugal force is helping that ball swing around the man. I feel like this is going against everything I learned in physics, but granted, I'm no physics major, and I learned all this stuff ages ago, so I thought I'd try and clarify here. [link] [comments]  |
| Posted: 17 May 2021 05:27 AM PDT I am wondering if bomb blasts are shiny. Like if light reflects from the blast of a bomb at any moment. I am asking this since I believe that the thickness of a blast could be enough to reflect light, although I need confirmation for my hypothesis. [link] [comments]  |
| Why do diabetic patients have it so worse in COVID infection? Posted: 16 May 2021 11:33 AM PDT |
| What happens to the degraded mRNA in vaccines once it's injected? Posted: 16 May 2021 06:44 PM PDT mRNA is very delicate and that's why it took so much research over the years to find a way to protect it inside of lipids for injection, and even then, the vials basically need to be kept frozen until they are going to be used in order to protect them from damage. Even fresh out of the factory, there can be a struggle to keep 75% of the mRNA content intact. Once thawed, the vaccine is subject to further degradation and Pfizer and Moderna won't disclose how much of the mRNA payload is damaged by the end of their respective storage limits and needs to be discarded. Let's assume for a moment, that after the Pfizer vaccine is thawed for 5 days as per their guidelines, 15mcg of the 30mcg (50%) of the mRNA is now degraded and renders the vaccine not as effective as is required, so it must be disposed of. Between the moment it's thawed, and the time it needs to be disposed of, there is a constant accumulation of degraded mRNA in the vial. We know that intact mRNA will enter your cells for the "copying system" in them to use the instructions to create the SARS-CoV-2 spike protein, which is what triggers the immune system to make antibodies against it. Great... But what about degraded mRNA? What does degraded mRNA produce? Does it jam up the copier and then get discarded as the cell clears it? Does it produce various incomplete spikes? Does it produce something more sinister? Please provide references to official studies for any answers if possible. [link] [comments]  |
| Which disease prevents you from getting the Covid-19 vaccine? Posted: 17 May 2021 01:03 AM PDT |
| Is graphene really one atom thick? Posted: 16 May 2021 07:34 AM PDT Many people have claimed that they can not just make graphene that's exactly 1 atom thick (and no more than that (which ok, is not too ridiculous of a claim to believe)) but let alone see it and touch it... To me that sounds preposterous! Online I can find graphene at 35μm that's 35.000 times thicker than a single atom... That I can believe yes, but graphene being exactly 1 atom thick that you can touch and see, sorry but I find the claim outrageous! For example if we had a sheet of graphene that's 1 atom thick then turn it sideways and it should become invisible to the naked eye correct? Since the wavelength of visible light is much bigger than the thickness of a single atom... How is any of this possible? [link] [comments]  |
| Posted: 16 May 2021 03:14 PM PDT |
| How can we see people of the light gets interfered by other light? Posted: 16 May 2021 10:57 AM PDT Let's say there are 4 people seeing eachother and each are allocated a slot, say north, south, east and west. North and South see each other and vice versa and east west see each other. So, vision is basically when light reflected of off some one and goes into our retina. So when the light of say north is traveling to South's eyes wouldn't the light of west and east interfere this light. And in that sense wouldn't every thing we ever see be choppy or something?? Edit: thank you for the responses, I have got my answer. [link] [comments]  |
| I'm an ant on a shaked glass of water. Do i see a scaled down version of shore waves ? Posted: 16 May 2021 09:52 AM PDT Basically the title. If I'm shaking a glass of water, do the ripples are the equivalent (just by a scale factor) of waves if you stand by the shore ? With tiny tiny waves just like people surf on. [link] [comments]  |
| How long have coronaviruses existed? Posted: 16 May 2021 08:38 AM PDT |
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