Comment perm (Score 1) 9
perm from a donor who unknowingly carried a cancer-causing gene has been used to conceive nearly 200 babies across Europe
And their hair is amazing.
perm from a donor who unknowingly carried a cancer-causing gene has been used to conceive nearly 200 babies across Europe
And their hair is amazing.
I'm not saying that they can't do it, it's that they can't legally do it.
Republicans equate being pro-market with being pro-big-business-agenda. The assumption is that anything that is good for big business is good for the market and therefore good for consumers.
So in the Republican framing, anti-trust, since is interferes with what big business wants to do, is *necessarily* anti-market and bad for consumers, which if you accept their axioms would have to be true, even though what big business wants to do is use its economic scale and political clout to consolidate, evade competition, and lock in consumers.
That isn't economics. It's religion. And when religious dogmas are challenge, you call the people challenging them the devil -- or in current political lingo, "terrorists". A "terrorist" in that sense doesn't have to commit any actual act of terrorism. He just has to be a heathen.
Ugh. Acrobat actually craps itself on forms now. The check boxes keep disappearing during scrolling, and I have the latest reader.
"The amount of raw materials used is significantly higher meaning the ecological impact is greater."
It isn't and that's also not how it works
No they did not. This story is about how they didn't. Learn to read, coward.
This isn't about a trademark. It's about a patented specification.
This is true. And the Republicans are the party of Nazis.
It's also a way to get around the prohibition on setting different prices for SNAP recipients. For example you can buy over the net from Costco with SNAP on Instacart but not directly. And the prices are higher there than on their site.
Nuclear Fission isn't cost effective
No. This is nonsense. Nuclear fuel production has a massive ecological impact. Nuclear only looks good when compared to coal. Stop doing that.
That's IMHO really overplaying it. I don't want to downplay food production effort difficulty, but saying "because we've never done it we can't" is like saying "Because we've never built a 5-meter-tall statue of a puffin made of glued-together Elvis dolls, we can't". We absolutely can, it's just a question of whether one thinks the investment is worth it. And I'm not talking out my arse, I have a degree in horticulture with a specialty in greenhouse cultivation. So much of the "keep the plants alive" systems we already do on Earth - you just need to get them there in an affordable manner.
The primary consumables are water and fertilizer. Nobody seriously is proposing building a colony that can't produce its own water. As for fertilizer, that would start off as an import, but a much smaller import than the food mass. On Earth, open-loop fert systems are fairly common, but they're slowly losing ground to closed-loop where you just maintain the EC, filter the returning solution, and every now and then due a nutrient-level test on the solution and individually adjust whatever nutrient might be lacking vs. the others.
We can consume lots of growing medium, like disposable rock wool cubes and the like, but we can also not do that. For example, it's perfectly fine to grow plants in clean sand / fine gravel - just clean it and sterilize it between uses. Something like pumice is better, though it slowly breaks down between uses. But you don't have to use anything special.
If you do LED lights, you may get a decade or so out of them. You can reduce shipping mass for replacement by going with designs that let you replace just the light boards from them (Mechatronix has lights like this for example), no need to resend e.g. the heavy heat sink, etc.
There's a million random things you use or that can wear out, from cleaning solutions to solution pumps to climate computers and and on and on. But they're not a meaningful import-mass, at least compared to food. Really, the big thing is fert. But regenerating fertilizer from waste (plant waste, human waste) should not be - industrially - immensely complicated. For the metals, burn to oxides / hydroxides, dissolve in acid, fractionally crystallize. You'll always lose some from the system, but we're not talking large amounts. For nitrates, Haber-Bosch is nothing exotic to adapt, and you have easy feedstocks (mining is complex, sucking in gases isn't).
(To elaborate about PELs: Venus's middle cloud layer is ~1-10mg/m3, depending on altitude, latitude, and what study you trust (our existing data isn't great). OSHA PELs are 1mg/m3 for an 8-hour shift. NIOSH's RELs are also 1mg/m3 for a 10-hour shift, with IDLH of 15mg/m3. Now, this has the two aforementioned caveats. On the downside, Venus's aerosols are higher molarity - 75-85% concentrated vs. ~20% on Earth. On the upside, the vast majority of the PEL/REL/IDLH risk is from inhalation, which obviously, you can't be doing in any atmosphere in our solar system other than Earth. Dermatitis thresholds are far higher. So again, so long as there's not rain/snow/dew/frosts, and you're at the right altitude/latitude combination**, you could probably spend some time outside in shirtsleeves and a facemask, and feel an alien breeze against your skin.
** One also has to stress latitude, not just altitude, as it's cooler for a given altitude as you get closer to the poles. While Venus's middle cloud layer climate is "similar" to Earth's, it's a bit on the warmer side for a given pressure than Earth's - and because an aerostat rides "down" in the atmosphere vs. its internal pressure, esp. at night when it's no longer being heated by the sun, it amplifies the impact. So if you're going to be living in the envelope, you need to find the right balance between how far you want to go below 1atm and how hot you want to have it be outside. Shifting more poleward helps find a better balance between the two (at the cost of lower sunlight availability for solar power vs. the super-bright equatorial regions). It also shortens your effective day (faster superrotation period). You probably don't want to go fully to the poles, though, because of the polar vortices (though how turbulent they are is still an open question).
BS. There's no ozone and at the height these balloons would float the UV and assorted stuff from the sun would fry you in seconds.
They are, however, correct. Venus has no (innate) magnetic field, only a weak induced one (about 2x that of Mars's induced field), but it has a massive atmosphere. The mass of matter over your head at a reasonable habitat altitude/latitude combination is equivalent to that of about 5 meters of water. Way more shielding than is necessary for human life. Of course, having even more shielding would be even better, as it would of course be nice to have Earthlike protection levels. But you could survive even a Carrington Event on Venus. Getting 5 meters of water-mass-equivalent over a Mars habitat, while doable, is quite an undertaking, and means you're living basically in a bunker.
Wtf re you smoking? Archimedes principle holds on Venus just as on Earth. Lose your lifting gas and you sink and on Venus you'll soon start to cook.
Aerostat internal pressures are very similar to the pressure outside of them, and they hold a tremendous amount of gas. A 1 cm hole is basically irrelevant in an aerostat; it's just some extra work for your gas generators, vs. what it already has to overcome due to gas diffusion through the envelope. By contrast, a 1cm hole in a tin-can habitat on Mars will kill you in minutes.
Venus's middle cloud layer is quite similar in most properties to Earth's troposphere, with convection cells, wind speeds, etc seemingly having a similar distribution to that on Earth. There's also lighting, seemingly at roughly Earth levels (though a lot of uncertainty), although we know very little about it, including even where it occurs (incl. whether it's in the middle layer), and why. Because Mars hogs most of the planetary exploration budget
Aerostats generally deal better with turbulence than fixed wing aircraft. They interact with it sort of like a ship at sea, with long, slow undulations rather than sharp jerks.
If it wasn't for Newton, we wouldn't have to eat bruised apples.