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If it weren't so uselessly large it would definitely be in my list of famous prime numbers to try. That makes it an incredibly poor choice.
There are only 49 of these known. I don't see how it can be used in encryption.
To enrich uranium to weapons grade requires centrifuges
There are other methods, but none of them are easy.
You can always try to accelerate using giant lasers around the Sun. They may be able to help you slow down, too, but I don't really see how that can be efficient.
Not only that, in the process of studying this and tearing it down to look for flaws they will probably ruin it, or at least make it very expensive to refurbish. They're making lemonade out of a lemon.
The only reason I see to care is that New Year's Day marks the start of a new season of anime. Of course, three other days do too, so not a big deal.
Yes, it's still toxic. So are many other things we want. The trick is not to spread it around, but considering how expensive it is that seems unlikely anyhow..
Pu-238 cannot be made into a bomb. It is not fissile. You may be thinking of another isotope.
Even if you don't like the ad it's a lot harder to block, so you may as well just live with it.
Plus, as someone else pointed out, an artificial magnetosphere may not be that difficult, especially if we can find room temperature superconductors.
I love them, but I rarely buy them. At least it's easy to tell if they are good because of the scent. The ones in the stores rarely have any scent.
The urban heat island effect is accounted for, as well as the change in some sites from rural to urban. The scientists compiling this data are not idiots.
It appears that 1500 ppb is an insane level.
Nitrogen dioxide (NO2) is absorbed in both large and small airways. Very high concentrations (>200 ppm) are very dangerous, causing lung injury, fatal pulmonary edema, and bronchopneumonia.
(high levels of NO will convert to nitrogen dioxide in a short period)
The legal limit for air quality over a long period is 53 ppb, and 100 pbb over shorter periods. Children show an increase in asthma even at these levels.
NOx is a serious pollutant. It is a cause of acid rain, asthma, bronchitis and cancer.
Serving coffee on aircraft causes turbulence.