Green Baron

We certainly are doing that. Sure, crustal life will survive as well, at least the initial blow. Correction then: "uninhabitable to humans and most if not all higher life if distributed well enough". But that multiple times with the available stuff. So is the advertisement since the '60s. Apart from that this threatd has lost contact to reality. :-)

Of course we cannot "destroy our planet", but we can turn the surface into an uninhabitable place with the release of the nuclear weapons. And with our behaviour and impact on the environment we have a bad effect on the biospehere, especially an biodiversity and climate as well as resources. But that wasn't the question ...

Ha ?

Why ? :-)

If it was something big and nuclear and it reentered there will be measurements of bad isotopes soon. Nothing is known for sure, only that the second stage deorbited as planned, or not ? I only hope it wasn't SpaceX's fault or we are likely to see more delays :-/

As @K^2 has pointed out there are always forces in equilibrium. One side is Gravity, the counterpart lies in the material, forces between the atoms/molecules, between the particles in the atom, between the particles that the particles consist off. And as gravity goes down (mass * acceleration, the acceleration sinks towards the center) pressure goes up from all the stuff higher up in the column and density increases corresponding with lower depth. Pressure of a planet's interior is expressed in gigapascal. So as the mass of the whole planet increases the pressure in the center increases and the stuff goes through different phase transitions first, from the normal dense stuff we know at the surface through several states of crystalline stages (atoms packed denser together), some of them experimentally replicated and some hypothetical. At one point the matter gives in, protons are forced into the electrons and form neutrons and if even that is not enough then density can even become infinite. I hope a physicist excuses my simple wording :-) What happens to a human body at the center of earth ? It'll be compressed to ~13gr/cm³, heated to 6000K and form a lasting amalgamation with the present mostly iron/nickel stuff in hypothetical phases there (not 100% clear what else, possible sink for missing sulphur to meet the observations of gravity and overall density). Maybe the water and carbon molecules pressed between free spaces of the core's iron/nickel molecules. If it is solid/crystalline or some sort of plasma can be debated. You won't mind anyway But it'll probably stay there until the earth is swallowed by the sun should that case happen one day since there is probably no big disturbance at the center.

The closer you get to the center of a (otherwise homogeneous!) mass (a planet), the less your weight. The pull of the mass of the planet outside of your height cancels itself out (the shell theorem above). nowhere and everywhere :-) The pull of the mass outside cancels itself out. You are not being pulled nowhere. But, of course, few gigapascal pressure and thousands of degrees temp. (nevermind if Celsius or Fahrenheit) will have their play with you :-)

ad 20.) This comes up every now and then since the old subdivision including Tertiary and Quaternary was thrown overboard to emphasize that this is not about humans but about geological processes. Many felt miffed, especially quaternary scientists, and some refuse to use the correct stratigraphical units until today. "Quaternary" is the only relic of ye olden times. http://www.stratigraphy.org/ICSchart/ChronostratChart2017-02.pdf http://www.stratigraphy.org/upload/QuaternaryChart1.JPG The ICS are the ones who give the names, and afaik an "Anthropocene" is not in discussion, though frequently used. I doubt artificial minerals ever find a lasting entry since they are too short lived, compared with what we are talking about in chronostratigraphy. But who knows .... :-) Edit: yes, it is, how could i ignore ? Ignoramus me .... http://quaternary.stratigraphy.org/workinggroups/anthropocene/

Aloha, the apostrophe is an 'Okina. Hawai'ian specialty. A consonant meaning a closed throat like the Bri'ish glo'al stop :-) Alroi', wilco, just to please you :-)

This is probably a misunderstanding: yes, one shall crawl from a fire because in the open the fresh air is drawn from below, heated, and CO/CO2 rich air leaves the fire in a heated plume above. Which can cause firestorms in extreme cases. But ducking down in a ditch can save your life in such a case. It did safe the life of my neighbour when he was caught in a forest fire once. In a CO2-flooded room (*)(this might be the sealed engine room of a ship or a server room where CO2 can be used to extinguish) the gas will collect near the floor. Crawling on the floor will kill you after a few breaths and i think that is written in the safety instructions of a CO2 extinguisher. The use of CO2 in the open will have little effect anyway as it does not cool the burning material and the gas is blown away quickly, despite the colourful images showing happy people spraying it at the flames ;-) That CO2 is deadly to oxygen breathers (please check this, in medical journals or so) results from the fact than it is used by the body as a marker to breath more if it collects in the lung. Remember that we exhale CO2 (3% of the exhaled air if i am not mistaken), if we can't get rid of it the nervous system signals: "breathe more !". This can cause hyperventilation, etc. and, if the level of CO2 rises too high in the lungs (a few percent are enough) it will have severe effects. I do not know the details, i must admit. Also, we as oxygen breathers need a minimum concentration of O in order for the lungs to work. Lungs are quite effective in comparison to the poor insect's tracheas, but nevertheless, less than 17% oxygen will make you gasp(**), less than 15% and it starts to get dangerous, which adds to the bad effects on health, because CO2 displaces the O in the breathable air. Clear, N is just for the pressure, apart from that its useless ... :-). So 4% CO2 would mean oxygen levels are too low for the body for an effective oxygen supply. But again, check this if you find the time. (*) i mean flooded from a CO2 extinguisher, not from the fire itself. In a normal house fire you are of course right with staying low ! (**) funnily the lower frame of oxygen in earth's atmosphere lies near that value, probably besides other effects because oxygen-users fade away and wait for better times ... :-) But that is only a thought. Have a nice day and stay away from a lack of oxygen :-)

It is number one caught red handed so far. That'll be a few thousands :-) Yes, it is irregular like many others, but that does by no means imply that it is artificial, as it has been depicted even in here. I am not having fun. And i think the second part was meant to be funny ? :-) If you say so :-) I hope Ummagamma has followers we can observe more closely. Well, still a highly interesting rock, as it is now clear that interstellar space isn't empty and in this case the object isn't much different from solar system TNOs (Edit: on first and superficial sight). Except that it is probably much older than the solar system. But had it not had the ludicrous speed and high inclination at initial detection, it could well have been yet another solar system asteroid. https://www.nature.com/articles/s41550-017-0361-4 (already linked above) tl,dr: hard shell, similar surface as organic rich TNOs, soft core not excluded. A little less reddish than the typical TNO. An originally organic-rich surface that has had a long share of cosmic radiation. Btw. "organic-rich" means oxygen-/nitrogen-/carbon- hydrogen groups, like detected on for example Churyumov-Gerasimenko (Chury) http://science.sciencemag.org/content/347/6220/aaa0628 Speaking of irregular shapes, Chury was weirder than Ummagamma, probably two bodies bound by a bridge of ice and dust. Hmmm, but not an Asteroid ... Oh, and thanks for urging me to look that up. Seriously :-)

F

Not exactly asymmetry, rather mirroring: The two Festo balloons :-)

In earth's atmosphere normal suction engines top out at around 4000m, charged ones maybe 8000, turbines 12-15000m. Very roughly ~+- window cross :-) Your atmosphere has a similar pressure but slightly more O(omph) ...

Hehe:-) Good morning *coffeeslurpnoise*. But every small asteroid is irregular (typically), spins different (typically), reddish isn't atypical for an old asteroid (typically, because may well be older than our solar system), and it must orbit something. Speed and orbit is connected, and because it is so fast it can't orbit a star. Ok, this is atypical, for our solar system and for now, maybe not for other potatoes/cigars/saucers out there ;-) Giving a meaning to a shape is a fantasy of ours ("cigar"), remember that moon with the shape of a typical 60's flying saucer ? The reddish thing was just an exaggeration in the media, i'd say, it is not atypical.

The availability of free oxygen has been pointed out. Besides that, you'll need of course fuel for combustion. Your second question is actually very complicated to answer because it depends on the whole biosphere of the respective planet. I only have earth as an example: earth's atmosphere has an oxygen window that varied between very roughly 15 and 30% in the past billion years. In the carboniferous, when oxygen levels were much higher, a single lightning could trigger fires that burnt until fuel was depleted (carboniferous coal !). In earths biosphere you'll need something around 5% of open air oxygen partial pressure for combustion to take place. If it is enough for a bbq, idk ... ;-)

Static buoyancy (Archimedes) is what you're looking for. If you have the densities then a volume or gravity is not needed as long as both exist (there is an "up" and a "down"). Object density / atmo density > 1 means object sinks, = 1 stays there, < 1 object rises. You can complicate things if you like with temperature, varying atmo density, surface tension, hollow objects or those consisting of different densities/materials. In short: a 100kg object will level off in an altitude where it displaces 100kg of atmosphere.

Or, in other words, and that is what the sarcastic article states, talk themselves out of it without taking over too much responsibility, just as little as legally possible. A well known pattern. Btw., when i bought my last PC the faults were known. The 600 funds for processor and board could have been spent better. Second try to take my leave, but somebody calls me a liar again i'll be back ! ;-)

I wanted to stay out of it, but since you mention me directly and call me a liar: your emphasis is misleading. "Recent reports that these exploits are caused by a “bug” or a “flaw” and are unique to Intel products are incorrect" For those used to logic (and i think people here are ;-)) an "and" concatenates the two statements into a single. So, lets formulate this correctly: "Recent reports that these exploits are caused by a “bug” or a “flaw” or are unique to Intel products are incorrect". That is true. "Recent reports that these exploits are caused by a “bug” or a “flaw” are incorrect". That is false. (*) "Recent reports that these exploits are unique to Intel products are incorrect". That is true. Sorry, m8 ;-) Edit: oh, wait: If you see this as a true statement, then we would have a case of that-what-we-shall-not-mention-here. Think about it. And that is what the article actually states. Conspiracy is, by the way, not existent in many parts of the world. It is an American thing, legislation in many countries does not know it because too soft and too manipulative. You have omission or deceit, which is much easier to verify.

Morning, a sarcastic comment: https://www.theregister.co.uk/2018/01/04/intel_meltdown_spectre_bugs_the_registers_annotations/ tl,dr: Intel admits that sensitive data can be gathered from a processor that "works like designed". Intel furthermore claims that these are not design flaws. Draw your own conclusions. First lawsuits are filed: https://www.businesswire.com/news/home/20180104006325/en/Branstetter-Stranch-Jennings-Doyle-APC-Announce-Filing @Snark: companies are not greedy, people are. Companies are an economic tool, owned publicly (corporations can be sued because they are by definition responsible for the acts of their employees, but that is a legal construct) or privately (address a boss or owner who are directly and fully responsible). They fulfill an economic purpose. Many of them to manufacture or trade a product or a service, many to own other companies for whatever reason, a lot of them to take advantage of geographical and political differences in resources, which definitely includes taxes and political environment, a huge factor these days. I hope you don't ask for deeper explanations, there is more than enough books and information on business admin and economics in general out there. Edit: if i am not mistaken, an attacker must be able to locally execute code in order to "benefit" from the faults. Like through a script in the browser or a bad attachment to a mail. So the usual "rules" of PC safety should, as always, minimise the danger. And with that i quit, maybe more info shows up in the future or the case will just run dead and in a few weeks it'll be forgotten, with the exception of those who unluckily fell victim.

Alright. Wilco :-)

That is no excuse imo. An honourable man would say "we made an error, we will correct it." and not steal away seemingly. And in my eyes this kind of errors should not happen.

Here you go, this a valid evidence for greed ? Edit: i don't say the errors were put in on purpose like the manipulated vw diesel engines. Rather that products were released that weren't ready, or at least they were not withdrawn when it became clear that they were principally faulty.

Do you think that these errors do not show up or at least engineers are aware during design and testing and they remain undetected for a decade ? I mean, how large is a team that designs a processor and how long does it take to do so ? Will there be nobody who says "Guys, we have a principle problem !" ? I doubt that this can be attributed to stupidity, rather greed. I think, like with many mass products (grocery, cars, medicine, software ...) too few providers face too many customers. We simply accept these things because they happen every day. I have a long list in my mind. But that doesn't make them more excusable. I do all banking from the PC, but due to my habits i never in 30 years had a virus. What now ? Thinks gb

I don't. But i feel a bit better :-) Just last year I bought a new machine (Intel) ! You mean it is all "half as wild" and we're just tricked into buying new stuff / accepting new viral updates ? Listen to what Google says !