chris_va

15 ms·

181.
by chris_va 4y ago
Yes, though try telling a pilot that their plane will get heavier as the flight goes along. (am a occasionally ga pilot and have been watching metal air batteries for a while)
182.
by chris_va 4y ago
I think the 2x is an extreme. There are some articles (which I have not verified) talking about how Paris reached 900+ Anywhere that traps smog should show similar correlations with CO2.
183.
by chris_va 4y ago
(Actual readings from Seattle, as an example) https://www.pmel.noaa.gov/co2/story/Space+Needle Older study https://www.sciencedirect.com/science/article/abs/pii/S13522... ... t
184.
by chris_va 4y ago
> 400ppm The outside ppm changes quite a bit in cities. CO2 dome effects can push it 2x higher.
185.
by chris_va 4y ago
No, we'd need to dissolve that amount into the mix layer (call it the top 50m, for argument's sake), which takes a few months to equilibriate with the atmosphere through that carbonate chemistry. But, if one managed to do it all a
186.
by chris_va 4y ago
Vesta, Ebb Carbon, Planetary Technologies, Heimdal (YC), some stealth companies, and some academics are looking at OAE directly. (may be missing a few) There are a lot of terrestrial enhanced weathering folks too, where the alkalinity event
187.
by chris_va 4y ago
This sort of thing? https://iopscience.iop.org/article/10.1088/1748-9326/ac002d/... ... Oceans equilibriate with the atmosphere after a few months (they absorbs more co2 in response to pH/carbonate
188.
by chris_va 4y ago
I think perhaps you didn't take the "one of worst nuclear accidents in history" part as much of an acknowledgement as intended. Disasters are not the norm, so focusing on the disaster intrinsically misses the global cost&#x2F
189.
by chris_va 4y ago
(disclaimer that I manage a climate research group) There has been quite a lot of interest in Ocean Alkalinity Enhancement (OAE) in the last few years. This is kind of an unfortunate title, as "geoengineering" (while not wrong) ha
190.
by chris_va 4y ago
It was one of the worst accidents in nuclear history. ... that killed ~1 person. I think the disconnect here is that the "whaddaboutism" type arguments are actually relevant for once. Arguing against nuclear (or anything else) is
191.
by chris_va 4y ago
Two reasons: 1) Because storing spent nuclear fuel on earth isn't actually hard, it is just brought up anytime people talk about nuclear because it's the obvious thing to talk about. 2) Rocket fleets have a ~97% success rate (e.g.
192.
by chris_va 4y ago
It's amazing how much influence Le Corbusier had on his contemporaries, and how that can live on to impact so many people. ... and, given the acid test of history, how terrible designs really were. Thus exacerbating the very thing they
193.
by chris_va 4y ago
Do you have papers/whitepapers you can share (privately or otherwise)? (I run a climate engineering group to help accelerate mitigation/removal methods.)
194.
by chris_va 4y ago
Ah, the ISA approach. I could never calibrate the fringy-ness of that idea. Do you have evidence that it works in-situ, or any ideas of how to test this in an observable way? If so, there are folks interested.
195.
by chris_va 4y ago
It used to be that a crazy high number (20%? 30%?) went to the uninsured patient that waited a long time to come in right before you, too. To be honest, it feels like 50-75% goes to overhead, and we just need to figure out a nice system to
196.
by chris_va 4y ago
You could think of it as the latter. It's ocean alkalinity enhancement (offsets ocean acidification, lets the ocean continue to take up CO2).
197.
by chris_va 4y ago
Random interesting fact That's about the flow rate of mafic rock required to offset global CO2 emissions, if it went into the ocean mix layer (and dissolved). Makes you wonder if all those evil villains blowing up volcanoes were really
198.
by chris_va 4y ago
I (like other commenters) can understand where you coming from. There are, of course, lots of solutions if you are willing to try them. Out of curiosity, have you tried the easy ones, like regularly inviting other folks over for a group din
199.
by chris_va 4y ago
Hm, why lasers? Seems like a phased array microwave would be cheaper, require no moving parts, and be able to target the root system ... and be less of a safety risk.
200.
by chris_va 4y ago
I've done some engineering and drug development... Image trying to write code where you can't actually see what you wrote, where each time you compile it costs $1000 and the binary randomly is corrupted 50% of the time. And the on
201.
by chris_va 4y ago
Yes, mRNA vaccine manufacturing (lipid encapsulation) is a nice example
202.
by chris_va 4y ago
Propulsion isn't as bad as it used to be, and there is a real risk >500km with the 10,000 satellites going up... I would prefer a standardized airbag (or similar) that autodeploys at EoL to increase the surface area, though.
203.
by chris_va 4y ago
https://en.wikipedia.org/wiki/Tsar_Bomba ... was slightly larger than that. Anyway, 59MJ isn't terrible if you can run it at 60Hz. Of course, I agree that the reality is a bit far away.
204.
by chris_va 4y ago
To play devil's advocate, we already employ hundreds of thousands of "cities, planners, and civil engineers" continuously to battle these distributed deaths.
205.
by chris_va 4y ago
Fun fact, the effective charging power of a gas pump is ~6MW (20MW thermal). Good luck getting a 1MW utility feed.
206.
by chris_va 4y ago
Amusingly I think most of that is not actually CGI (as we now define it). They had a giant warehouse with a toy NYC that they flew a camera through with little models... pretty nuts given how movies are made now. The making of Fifth Element
207.
by chris_va 4y ago
This is an interesting lab setup, but... Are underwater cables ever not paired? HVDC are always coaxial, so... No field. Edit: paired but not always coaxial, so it's possible to get a small field.
208.
by chris_va 4y ago
A bit old, but fun read: https://ntrs.nasa.gov/api/citations/19810019084/downloads/19... ... there are newer sources, but I'd have to dig through notes, nothing very concrete.
209.
by chris_va 4y ago
No, the ionosphere does weird things, including self-lensing at high enough power densities (frequency dependent too), so there's probably a bit more to test
210.
by chris_va 5y ago
That's true for income tax as well

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