How much methane is likely to be released by the melting of permafrost due to Global Warming, and what are the likely impacts of this (how bad will the effects be)? |
- How much methane is likely to be released by the melting of permafrost due to Global Warming, and what are the likely impacts of this (how bad will the effects be)?
- Will the rings of Saturn eventually become a moon?
- Any hope for commercial nuclear fusion of heavier elements?
- How, exactly, does dissipating the proton gradient across the inner mitochondrial membrane (e.g. during brown adipose tissue thermogenesis) produce heat?
- What specifically tells scientists where a meteorite formed in the solar system?
- Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
- How do fireflies control their light?
- How do cameras compare to the human eye?
- What effect do Beta2 Agonists have on the retina?
- How does Earth's magnetic field actually "block" solar and cosmic radiation on a fundamental level?
- What is the nuclear anapole moment?
- What happens to a light ray after contacting with the surface of a solar panel?
- Does travelling by train really pollute more than by car?
- What s the quantum mechanics explanation of the angles between the atoms in molecules?
- Are there any diseases that are more common in one sex than the other that aren’t genetic or genital related?
- If a person becomes dehydrated, can their body somehow "draw" from liquid in the bladder as a source of hydration without having to expel and drink it?
| Posted: 09 Jul 2019 05:12 PM PDT |
| Will the rings of Saturn eventually become a moon? Posted: 10 Jul 2019 06:22 AM PDT As best I understand it, the current theory of how Earth's moon formed involves a Mars sized body colliding with Earth, putting a ring of debris into orbit, but eventually these fragments coalesced to form the moon as we see it now. Will something similar happen to Saturn's rings? How long will it take. [link] [comments]  |
| Any hope for commercial nuclear fusion of heavier elements? Posted: 10 Jul 2019 06:27 AM PDT So most efforts are focused on hydrogen fusion (deuterium+tritium) if I understand correctly. What makes us not even consider Carbon+Carbon fusion for example? Is there any chance we might better control that process ? [link] [comments]  |
| Posted: 10 Jul 2019 02:44 AM PDT It is well known that cells of brown adipose tissue, used for thermogenesis, express uncoupling proteins which dissipate the proton gradient across the inner mitochondrial membrane, generating heat. There are also medications (2,4-dinitrophenol) that do the same thing, leading to higher energy usage but uncontrolled heat production. However, in explanations of this phenomenon, the exact explanation of how this photon transport leads to heat generation is always handwaved away as something like "the energy of the proton gradient is wasted as heat" in more or less complex formulations. I am interested in the exact physical mechanism which links the proton influx into the mitochondrial matrix to an increase in temperature, which I have never been able to find explained anywhere. Also, a further question which may or may not be answered by my primary question: why does dissipation of a concentration gradient not lead to heat generation in other scenarios (e.g. when concentration gradients across neuronal cell membranes are dissipated at the postsynapse or the axon, during signal transmission; or during a large scale calcium influx into muscle cells)? [link] [comments]  |
| What specifically tells scientists where a meteorite formed in the solar system? Posted: 10 Jul 2019 05:49 AM PDT Saw a piece on Atlas Obscura today that discussed the Benld meteorite. It is described as "having formed between Mars and Jupiter". Some meteorites have been traced to Mars, Vesta or just regions of the solar system. While I understand the concepts of the "Frost Line" and differentiation in the pre-solar nebula, it's not clear what specific indicators are used locate the origins of different meteorites, and what the underlying theory solar system formation those location attributes are based on --e.g. with the new models of planetary migration in the early solar system history, do the location indicators still hold up? [link] [comments]  |
| Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology Posted: 10 Jul 2019 08:12 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Biology, Chemistry, Neuroscience, Medicine, Psychology Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! [link] [comments]  |
| How do fireflies control their light? Posted: 09 Jul 2019 05:56 PM PDT I know how it's made, I just don't know how they control it. [link] [comments]  |
| How do cameras compare to the human eye? Posted: 09 Jul 2019 02:00 PM PDT Will there ever be a point that cameras can achieve the same standard as the human eye, when will that be and why hast it already happened? [link] [comments]  |
| What effect do Beta2 Agonists have on the retina? Posted: 10 Jul 2019 02:17 AM PDT Beta2 Agonists are broncodilators, what effect do they carry inside the eye? Vasodilation? Vasoconstriction? I am just curious if any brilliant people can help shed somelight on this as I cant find information on its effect on the eye. Hard question- [link] [comments]  |
| How does Earth's magnetic field actually "block" solar and cosmic radiation on a fundamental level? Posted: 09 Jul 2019 10:19 AM PDT |
| What is the nuclear anapole moment? Posted: 09 Jul 2019 06:22 PM PDT I was reading a little about APV a while ago to find out the current state of experimental research and see what kind of atoms are appropriate for APV probing, and I kept coming across the term Nuclear Anapole Moment (I think, it might be similar and I'm forget-remembering), but all the explanations I could find were really geared towards those who already have a better understanding of Nucleus structure than myself, or I was tired... either way I was hoping I might get a good answer seeing the quality of the usuals here. Background: I have undergrad in physics and starting a theoretical Master's soon. edit: probing [link] [comments]  |
| What happens to a light ray after contacting with the surface of a solar panel? Posted: 09 Jul 2019 06:47 AM PDT |
| Does travelling by train really pollute more than by car? Posted: 09 Jul 2019 09:43 AM PDT I saw this in an old Top Gear episode. They actually said that travelling by modern high speed trains polluted more than planes? [link] [comments]  |
| What s the quantum mechanics explanation of the angles between the atoms in molecules? Posted: 09 Jul 2019 09:26 AM PDT |
| Posted: 09 Jul 2019 01:16 AM PDT |
| Posted: 08 Jul 2019 09:24 PM PDT I'm wondering for example if I run out of water in the desert, would it be a good idea to try not urinating for as long as possible? Or is any excess water in the bladder already "spent"? [link] [comments]  |
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