How do birds survive the incredible cold temperatures of the polar vortex? |
- How do birds survive the incredible cold temperatures of the polar vortex?
- Does carbonating a liquid alter the ph level of it?
- Could southern hemisphere countries get something similar to the polar vortex from Antarctica?
- How old is the oldest DNA/RNA that has been extracted? Is it the same as the molecules all living organisms have in their cells now? Did nucleic acids evolve or are they the same as they were when life began 4 billion years ago.
- Is the polar vortex a natural thing or is it also caused by climate change? If so, how does it occur?
- Why does the human body use hydrochloric acid to create gastric acid? Could it hypothetically use other acids, or even bases?
- Did our gut bacteria originally ride into our bodies on the kind of food it helps us digest?
- Is cannabis essentially the same as Prozac/Flouxetine as a serotonin blocker?
- Does the air inside of a moving car tire rotate or stand still?
- If temperature is a measure of the average kinetic energy of molecules, is there an equivalent measure of their standard deviation?
- Do molecules actually look like their displayed formulae?
- Is the amount of boogers in a person's nose, a good indicator of how polluted/dusty their surroundings are ?
- When we say "particles behave differently when observed" what is the nature of observation?
- Why is it important that refrigerants in HVAC systems go through phase changes?
- Why do slaps to wet skin hurt more than dry skin?
- Is there any difference between a block of ice and the same block of ice that received a certain amount of energy but not enough to melt it?
- All the planets in our solar system orbit in the same plane, does this phenomena scale to the entire universe?
- What would happen to a single photon going through a prism?
- Can dogs tell if someone is a man or a woman? Do they have a concept of gender for humans?
- Why after a certain age people start to get smaller?
- Hypothetically, what would happen if a neuron synapses onto it's own dendrites?
- Does fungi grow on our bodies?
| How do birds survive the incredible cold temperatures of the polar vortex? Posted: 30 Jan 2019 11:38 AM PST The title says the most of it. I'm in the Midwest right on the Mississippi and to say that its cold out is something of an understatement. I went for a quick walk by the river to see what all the hype was about (I'm from the West coast originally and I've never been in temps anywhere near this cold). I was outside for all of twenty minutes as tightly and hotly bundled as a human can be and my eyelashes froze and I thought I'd freeze solid if I had to stay outside for an hour. I could hardly see where I was going while I was walking into the wind I had to keep blinking and wiping the ice away. All the while I saw dozen of birds out flying around, in the few patches of river that hadn't frozen yet and flying in the air above. It was -20 give or take when I went out, and that's peanuts compared to what it was overnight, but these birds clearly survived that. How do they manage it? I guess for clarification, I'm talking about gulls, bald eagles and birds I am fairly certain were ducks. Edit: Front page of r/AskScience? Alright! Thanks everybody for the responses, I can tell I'm not the only one curious about this. [link] [comments]  |
| Does carbonating a liquid alter the ph level of it? Posted: 31 Jan 2019 07:30 AM PST |
| Could southern hemisphere countries get something similar to the polar vortex from Antarctica? Posted: 31 Jan 2019 03:09 AM PST Is it a specific situation in the arctic circle? Or could South America/Africa/Australia also face this situation? [link] [comments]  |
| Posted: 31 Jan 2019 06:39 AM PST It is fantastic enough to think that all life shares the same DNA/RNA. Did these nucleic acids start it all off in primordial times or do we know if they have evolved themselves as life complexity grew? [link] [comments]  |
| Posted: 31 Jan 2019 05:17 AM PST |
| Posted: 30 Jan 2019 08:59 PM PST Is it related to the relative abundance of hydrogen and chloride in the human diet? Is creating HCl easier than other acids like sulfuric or nitric? I'm not really clear on how the body creates HCl and whether that process could somehow/hypothetically be different to allow for other acids or possibly bases. [link] [comments]  |
| Did our gut bacteria originally ride into our bodies on the kind of food it helps us digest? Posted: 31 Jan 2019 04:07 AM PST Did bacteria that digests sugars first ride in on something sugary? Did fiber-eating bacteria originally ride in on fiber? Is that anything like the way it works? Edit: If that is the way it works, does it mean we might be able to engineer symbiotic bacteria to help solve hunger issues? [link] [comments]  |
| Is cannabis essentially the same as Prozac/Flouxetine as a serotonin blocker? Posted: 31 Jan 2019 02:23 AM PST Can chronic use of Prozac lead to depression much like chronic use of Cannabis? Can one get the same benefits from CBD oil? [link] [comments]  |
| Does the air inside of a moving car tire rotate or stand still? Posted: 30 Jan 2019 05:34 PM PST |
| Posted: 30 Jan 2019 09:24 PM PST |
| Do molecules actually look like their displayed formulae? Posted: 31 Jan 2019 05:52 AM PST Sorry if this is a stupid question, but we've been studying hydrocarbons at school and I was wondering if, under an incredibly high magnification and resolution microscope, would the hydrocarbon molecules look anything like the shape we have been taught to draw them as? [link] [comments]  |
| Posted: 31 Jan 2019 05:04 AM PST |
| When we say "particles behave differently when observed" what is the nature of observation? Posted: 31 Jan 2019 04:47 AM PST What makes an observation observation, does observation include looking? Taking photo? Listening? What if i take a photo accidantly, is it observation then? And if it means interacting in any way, dont i interact with it any way with my existance in any form? [link] [comments]  |
| Why is it important that refrigerants in HVAC systems go through phase changes? Posted: 30 Jan 2019 10:47 PM PST I understand the refrigeration cycle and that refrigerants go through phase changes and how temperature only change through sensible heat and not latent heat, but why is it important that a refrigerant's boiling point is within the range of temperature changes that occurs? Why not just have a refrigerant that stays as a gas, whose pressure can be altered by the expansion valve and you don't have to worry about liquid getting into the compressor as well? [link] [comments]  |
| Why do slaps to wet skin hurt more than dry skin? Posted: 30 Jan 2019 06:08 PM PST |
| Posted: 31 Jan 2019 04:32 AM PST Well obviously except for the fact that the the one that receive energy will melt faster. [link] [comments]  |
| Posted: 31 Jan 2019 04:28 AM PST From the Earth and Planetary Sciences FAQ:
My question then arises: [link] [comments]  |
| What would happen to a single photon going through a prism? Posted: 30 Jan 2019 05:51 PM PST To clarify things, let's make the prism "perfect" in the sense that it has no imperfections. Furthermore, let's make it a photon of "red" light (625 - 740nm). Here's one rough explanation of what happens: If one were to conduct the experiment with a beam of red light, an angle of refraction would be observed. This angle of refraction would of course, be less than that if one were to employ a beam of "violet" light. Now repeat with a single photon of "red" light: If the photon is not observed until after passing through the prism, it is fair to say that it should have passed through the prism as would a wave with the wavelength of red light. On the other side of the prism, it will be detected with an angle of refraction corresponding to "red" light. Any thoughts on the above? This has been asked before, but I felt the responses were not as clear they could have been, perhaps because the question & main assumptions required clarification: https://www.reddit.com/r/askscience/comments/22icbf/what_happens_to_an_individual_photon_when/ [link] [comments]  |
| Can dogs tell if someone is a man or a woman? Do they have a concept of gender for humans? Posted: 31 Jan 2019 12:16 AM PST |
| Why after a certain age people start to get smaller? Posted: 31 Jan 2019 03:50 AM PST |
| Hypothetically, what would happen if a neuron synapses onto it's own dendrites? Posted: 30 Jan 2019 12:42 PM PST If you could somehow get a neuron's dendrites to connect to it's synapses what would happen if an action potential was triggered? [link] [comments]  |
| Does fungi grow on our bodies? Posted: 31 Jan 2019 03:33 AM PST |
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