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User: WalksOnDirt

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  1. The measure the temperature increase via CO2 *per doubling*, so in fact, the effectiveness falls *incredibly* fast.

    We've had less than half a doubling so far. That's not fast. It's too slow to help much.

    And for ocean *neutralization* (remember, it's basic, not acidic), it's almost impossible to find *any* signal there, much less an anthropogenic one. The ocean is *way* bigger than you imagine, and has pH fluxes *way* bigger than any asserted long term trend.

    Coral bleaching is increasing, and that is partially due to acidification (it's still called 'acidification' even when the pH doesn't go above neutral), although the temperature also plays a role. The ocean is much more sensitive to pH changes than you imagine.

  2. Yes, but the decline in effectiveness is not all that fast. The second 120 ppm will do 80% much as the first 120 ppm (I think). It will get rather unpleasant before the warming really slows.

    That only applies to temperature, though. Ocean acidification doesn't slow down, at least not soon.

  3. Even neutral water will slowly dissolve coral, living or dead. The major problem is the extra energy it takes to deposit coral in a less alkaline ocean. Eventually it can't survive.

  4. Re:75% of American Horse Association riders say... on AAA: 75% Of Drivers Say They Wouldn't Feel Safe In An Autonomous Vehicle (consumerist.com) · · Score: 1

    I'm really getting sick of all you cowards trying to reduce our liberties in the name of safety. Further, I've seen you quote Jefferson's quote about liberty and safety.

    Hey, this is not a private conversation! What did Jefferson say?

    Although this Benjamin Franklin quote seems appropriate: "Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety."

  5. Re:Create an "Devil's Advocate" moderation on Ask Slashdot: How Can We Improve Slashdot? · · Score: 1

    I agree.

  6. Videos on Computer Beats Go Champion · · Score: 3, Informative

    Videos are available.

  7. 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.

  8. Re:PrimeCoins on New Mersenne Prime Discovered, Largest Known Prime Number: 2^74,207,281 - 1 (mersenne.org) · · Score: 3, Insightful

    There are only 49 of these known. I don't see how it can be used in encryption.

  9. Re:EU and US on Iran Complies With Nuclear Deal; Sanctions Lifted (nytimes.com) · · Score: 1

    To enrich uranium to weapons grade requires centrifuges ...

    There are other methods, but none of them are easy.

  10. Re:Physically feasible? on The Three Possible Classes of Interstellar Travel (forbes.com) · · Score: 1

    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.

  11. Re:That's Ridiculous on SpaceX To Test Recovered First Stage, Then Put It On Display (floridatoday.com) · · Score: 1

    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.

  12. Re: Need to protect it well. on ORNL Restores US Capability To Produce Plutonium-238 (ornl.gov) · · Score: 1

    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..

  13. Re:Need to protect it well. on ORNL Restores US Capability To Produce Plutonium-238 (ornl.gov) · · Score: 4, Informative

    Pu-238 cannot be made into a bomb. It is not fissile. You may be thinking of another isotope.

  14. Re:From the same domain on AdBlock Plus Updates Acceptable Ads Policy · · Score: 1

    Even if you don't like the ad it's a lot harder to block, so you may as well just live with it.

  15. Re:Living on a mine field on Mars Colonies and Class Warfare (examiner.com) · · Score: 1

    Plus, as someone else pointed out, an artificial magnetosphere may not be that difficult, especially if we can find room temperature superconductors.

  16. Re:More than that actually. The bananas are better on Disease Threatens 99% of the Banana Market (washingtonpost.com) · · Score: 1

    Apricots.

    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.

  17. Re:Thermometer accuracy on Global Temperature Set To Reach 1 Degree C Over Pre-Industrial Levels (metoffice.gov.uk) · · Score: 1

    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.

  18. It appears that 1500 ppb is an insane level.

    From here

    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.

  19. Re:10x density, 1/5 cost - another breakthrough. on Cambridge Researchers Present Lithium-Air Battery Breakthrough (google.com) · · Score: 1

    10x the energy density!
    1/5 the cost
    1/5 the weight.

    I would prefer to get estimates in Wh/kg, Wh/l or $/Wh. Factors against an unknown baseline just adds confusion.

  20. Re: Climate change vs. Nuclear accident on Should Japan Restart More Nuclear Power Plants? (thebulletin.org) · · Score: 1

    The French do not generally use breeder reactors, although they did have some demonstration reactors. They do reprocess their used fuel, which the USA doesn't do.

    Russia is still making some breeder reactors, the BN series.

  21. Re:Honestly, Japan's screwed no matter what. on Should Japan Restart More Nuclear Power Plants? (thebulletin.org) · · Score: 4, Interesting

    Actually, they can still use that land. It's unsuitable for living on, growing food, etc

    Over 90% of the affected area is suitable for those uses right now. The radiation in those parts is less than that of Colorado. I don't see people leaving Colorado because of the radiation.

  22. Re:Aw fudge. What a let-down on See the Sketches J.R.R. Tolkien Used To Build Middle-Earth (wired.com) · · Score: 1

    No arrows for me, but I found I could drag the picture to the side and another popped in.

  23. Re:GOOD GRIEF! on The Decline of 'Big Soda': Is Drinking Soda the New Smoking? · · Score: 1

    Speaking of eating fruit, did you ever get any dragonfruit to grow on your plants?

  24. Re:An honest question on US Restarts Hunt For Gravitational Waves With Advanced LIGO · · Score: 1

    The instrument turned out to be noisier than expected. A lot of work has gone into reducing the noise. Also, while many didn't expect to see anything, you can't really know until you look.

  25. Re:"Yes. And you're smart, too." on Barbie Gets a Brain · · Score: 0

    What if the girl is actually stupid?

    Then she'd be a boy! :-)