The AirGradient uses the D1 wemos as the microcontroller & network connectivity. There are D1 ethernet shields that have PoE that would make it pretty easy to slap on top of the d1 and provide this exact feature, however you might need to tweak the code a bit to switch the network access from wifi to ethernet.
I've read that the majority of microplastics come from tire wear (national geographic quoted 28% of the total), and because there's no good alternative to wheel tires, it's unlikely we'll see a decrease of pollution here. So even if we found an alternative to bottles, plastic bags, clothing, etc, it still won't make a dent in pollution unless we convince the world to use a form of public transit that doesn't make use of plastic tires.
We could reduce human consumption of the particles if we only consumed lab-grown meat & hydroponically grown vegetables where the water is ultra-filtered before use.
> Suburbs don’t exist because of some big oil and auto company conspiracy. They exist because they give people an option they find more appealing vs urban areas.
No, modern car-dependent suburbs actually do exist because of oil and auto conspiracies. There exist options between high density and car-dependency. Surburbs can be walkable, and cities can have walkable low-density areas.
Your typical modern American suburb is homes that would be three family homes 60 years ago on land that would fit three of those homes let alone a normal size house. All of this is subsidized by tax write-offs and gasoline that is 50% discounted relative to the rest of the developed world.
Not much freedom of movement when everything even a neighbor is a 15 minute drive away either due to sprawl or trafic.
I also learned in a Not Just Bikes video that the US tire lobby prevents regulation on quieter car tires. I bet there are ways to make tires that shed fewer microplastics - it's just that we don't do it.
I did some more research, and it looks like tires are the 2nd largest part of the pie in terms of single origin. The largest is textiles which are 35%.
Do you know what happens to explosives on sunk ships generally? Are they usually left at the bottom of the ocean, and could they have the potential to detonate?
Typically they would just be left there and (very) slowly degrade. As an example, the Dutch navy still clears hundreds of mines and unexploded bombs every year, left over from the 2nd world war. The explosives still work and are usually triggered with a small clearing charge so that they won't pose any danger to fishermen and the like.
So yes there is potential to detonate, but in general that does not matter a lot unless you are the unluckiest person in the world and happen to be right above it at the time. The explosive wave front expands in a sphere and so decreases in amplitude with the square of the distance to the origin. It loses lethal potential very quickly.
That said, if anyone decides to mount a recovery or salvage mission of any kind, it may be worth upgrading that "no" to a soft "maybe".
As far as I know, nobody has tried to retrieve conventional munitions from a shipwreck, and reasonably enough - they're not dangerous enough to be worth the trouble. Nations will go after lost nuclear warheads, though; indeed, Bayesian search theory saw significant development and interest to serve that purpose [1], and the CIA's been known to go to Bond-movie levels of trouble to the same end [2].
Granted, these were both First Cold War projects, but it seems like there's some degree of possibility that this use of "First Cold War" may eventually prove not to have been a somewhat silly joke, so...
No, but by the wonders of a moment's consideration we can surmise that leaving an example of the US's newest stealth technology, in the backyard pool of the power it's primarily designed to be used against, might not strike someone in the US Department of Defense as the world's cleverest idea.
(For what it's worth, I don't love linking to Less Wrong for this or any reason, but I couldn't as quickly find another reference for the point about Bayesian search theory. If not for the fact that I've seen it mentioned elsewhere in, let's say, less breathlessly wide-eyed technopositivistic contexts, I wouldn't have included it at all.)
That's basically my point. There are plenty of good reasons for salvaging the Moskva that are completely unrelated to whether it carried nuclear weapons.
Understandable! I used the phrase "soft maybe" earlier with deliberation aforethought, but I can't blame anyone for overlooking that in favor of the giant red flag I also sent up in the same comment. (Not when there's still 98 years and change to go on my ban from Scott Siskind's Substack, anyway...)
With regard to the value of recovering Moskva, I suppose I don't know. It's not all that young a design, and evidently struggles against even subsonic antiship missiles. Not that that means it's worth nothing, of course, but I could see the possibility that to attempt a recovery would be throwing good money after bad. That said, you quite evidently have experience in this realm that I lack, and your analysis is thus certainly better informed than mine.
National pride could be a big reason, maybe it carried their newest hypersonic missile, or maybe it carried some other new technology.
And since it sunk in the Black Sea, depending on the exact location, it could have sunk in a relatively shallow area, where it is easy to do the salvage even if there is no really good reason.
The Israeli Navy, for example, spent several decades searching for its lost submarine INS Dakar. It was located in 1999 and then the conning tower was salvaged from a depth of 3,000m and placed in the Naval Museum.
Still better than electrical resistive heating (space heaters) which has a COP of 1. Even when it's super cold outside, heat pumps with a HPSF around 10 would still have a COP around 2. See the graph:
https://www.researchgate.net/figure/e-efficiency-of-an-Air-S...
Of course space heaters are far easier to move around the house compared to a mini-split system and would use less power if you only plan to heat a small room.
While technically correct that an AC _is_ a Heat Pump, the current commonly understood meaning of Heat Pump is a Bi-Directional Heat Pump while an AC is a Uni-directional Heat Pump (moving heat outside).
Why would it be the fault of hospitals? They have no incentive to construct more ICUs. A large percentage of covid patients entering the ICU for ventilation will die, and you can't collect on a dead patient. ICUs are a money hole -- they require specialized equipment, isolation construction, experienced medical team, etc. If a hospital is motivated by profit, they would construct as few ICUs as legally possible.
It’s not my problem to fix hospitals. I shouldn’t be forced to wear some worthless mask because my lousy government can’t find a way to staff some kind of emergency Covid hospital. I only pissed away two years of my life waiting for them to do so… Time is up. Not my problem.
Masks aren't useless, which is pretty obvious to anyone who thinks about the physics of an airborne pathogen for a few minutes.
Research demonstrates the same thing.
Why would anyone spend billions and billions on field hospitals when there's an easily available vaccine that prevents all of this? No one expected the uptake to be so bad. I mean even T**p is telling people to get their boosters.
Nurses working in the ICU during the beginning of the pandemic would use the same mask for an entire week without losing efficacy. If the masks didn't work, we would have seen a huge number of them infected in the NYC hospitals but that didn't happen. Most viruses don't survive very long on surfaces.
ICU nurses wear N95 masks that are fitted and tested (a bad tasting/smelling aerosol is used). It is completely sealed around the face. This is how my SIL did COVID ICU for 1.5 years every week without contracting it. Not the same as the one size fits all n95 people loosely place on their faces.
you can reuse n95s, nurses do it all the time. let them sit near a sunny window, off-smells will dissipate in a day. each mask is good for around 8 hours of continuous usage, but it's likely that the mask becomes too soiled before the electrostatic charge is neutralized.
In a non-healthcare setting the lifespan of an N95 is way longer than 8 hours perhaps 30-40.
Generally the idea is to get a new one when it becomes noticeably harder to breath.
Generally for COVID use, as opposed to say, construction, I find the mask will physically fail (e.g strap breaks or stretches too much, nose foam detaches) before the filter media is close to being used up.
