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NASA Reports Vast Hydrogen Reserves in Earth's Crust

Garin writes: "The Vancouver Sun is reporting that NASA scientists have discovered vast quantities of hydrogen stored in the Earth's crust while they were trying to explain the presence of living bacteria. Could this be the beginning of the end for our dependence on oil? I hope so."

42 of 721 comments (clear)

  1. Re:Could it be? by yatest5 · · Score: 3, Interesting

    If only the oil companies would allow it...

    Do you not think that there would just be a new group of powerful companies selling hydrogen instead?

    --
    • Mod parent up! [a] by Anonymous Coward (Score:5) Thurs, June 31, @13:37
  2. Oxygen crisis in 3000 by coyote-san · · Score: 5, Funny

    Sure, it sounds like a neat idea now.

    But wait until we've been burning hydrogen-powered cars for a thousand years, locking up all of the atmospheric oxygen in water. People will be gasping for air at sea level, and the 'dead zone' on mountains (which the oxygen level is too low to support human life) will include cities like Denver and Mexico City.

    --
    For every complex problem there is an answer that is clear, simple, and wrong. -- H L Mencken
    1. Re:Oxygen crisis in 3000 by mmacdona86 · · Score: 5, Informative

      Plants release oxygen from both carbon dioxide and water. When you metabolize carbohydrates, you get both CO2 and H2O. Photosynthesis reverses this.

    2. Re:Oxygen crisis in 3000 by istartedi · · Score: 3, Interesting

      If the primary product of combustion is CO2, you are OK becasue CO2 is a natural part of the carbon cycle--trees and phytoplankton turn it back into O2. So, as long as there are enough photosynthesizing organisms to complete the cycle, you can release all the CO2 you want.

      I agree with the OP that H2 is another matter. Release twice the number of H atoms as there are O atoms, it all becomes water, and the only way to get the O2 back is by electrolysis or some other man-made process. As far as I know, there are no eletrolytic organisms or other natural process to get the O2 back, so we are screwed.

      Of course there must be some natural process that liberates O2, otherwise the whole carbon cycle wouldn't have gotten set up in the first place. However, that O2 was probably liberated over a long period.

      If we go to a H2 based fuel economy, perhaps we will need to have some kind of accounting for oxygen production. In other words, no license to produce H2 fuel unless you also release O2. This would be no problem for traditional H2 producers which (as far as I know) are using electrolysis and presumably putting O2 back into the system. It would only be a problem for "fossil H2" producers, who would have to find an O2 source.

      --
      For all intensive purposes, "whom" is no longer a word. That begs the question, "who cares"?
    3. Re:Oxygen crisis in 3000 by kawika · · Score: 4, Insightful

      I thought I might mod this to Funny but decided to post instead because people seem to be taking it seriously. What makes you think that burning oil will consume less oxygen.

      One good thing about burning hydrocarbons is that it produces CO2. Yeah, yeah, global warming etc, but if we increase the CO2 in the atmosphere then it is good for the living things that need CO2 to live--plants. There is already some evidence that higher CO2 levels are causing increased crop yields. Here's one reference that Google brought up. The plants will produce oxygen in return, and life will be good again. So even if we convert to Hydrogen for cars, maybe we'll keep a few dozen coal and oil power plants in service to produce CO2 for our friends the plants.

    4. Re:Oxygen crisis in 3000 by mamba-mamba · · Score: 4, Interesting

      Don't worry about oxygen. As others have pointed out, we have been engaging in "destroying" oxygen for many many years already, and there is still plenty of it. This is true for a reason:

      Plants liberate O2 during photosynthesis.

      In fact, the single biggest and most important biological and geological change in Earth's history was probably when plants first began to spew oxygen which, at the time, must have been HIGHLY TOXIC to most life forms. Prior to that time, almost everything on Earth was in an (electrochemically) reduced state. Over some geological period of time, everything converted to an oxidized state. Most organisms must have become extinct or relegated to marginal environments when this happened.

      However, eventually a new class of organisms arose which was able to take advantage of the new, oxygenated environment with the use of aerobic respiration. The rest, as they say, is history.

      MM
      --

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      By including this sig, the copyright holders of this work or collection unreservedly place it in the public domain.
    5. Re:Oxygen crisis in 3000 by wytcld · · Score: 4, Interesting

      Further studies showed that atmosphere with extra carbon dioxide only results in increased plant yields if the soil is also enriched beyond the normal soils - the plants in place are already evolved for maximum efficiency of carbon dioxide use given the current fertility of the natural soils. So you can get a boost in plant growth if you fertilize - which requires vast amounts of oil and results in serious downstream pollution; but as far as, say, forests go, you get virtually no gain from extra atmospheric carbon dioxide.

      --
      "with their freedom lost all virtue lose" - Milton
  3. Article text by Anonymous Coward · · Score: 5, Informative

    Posted anonymously because I don't need the karma.

    LONDON -- Scientists have discovered vast quantities of hydrogen gas, widely regarded as the most promising alternative to today's dwindling stocks of fossil fuels, lying beneath the Earth's crust.
    The discovery has stunned energy experts, who believe that it could provide virtually limitless supplies of clean fuel for cars, homes and industry.

    Governments across the world are urgently seeking ways of switching from conventional energy sources such as coal, gas and nuclear power to cleaner, safer alternatives.
    Energy specialists estimate that oil production will start to decline within the next 10 to 15 years, as the economically viable reserves start to run out.

    Hydrogen gas has been hailed as the ultimate clean fuel, as it produces only water when burned. Until now, however, moves to switch to a "hydrogen economy" have been dogged by the cost of making the gas. The two most common ways -- extraction from natural gas and sea water -- are expensive and create environmental problems.
    Now scientists at the American space agency Nasa have found that the Earth's crust is a vast natural reservoir of hydrogen which has become trapped in ancient rocks.

    The team made its discovery while trying to explain how bacteria live many miles below the Earth's surface. Such bugs have no access to sunlight, forcing them to rely on another source of energy for life. Scientists suspected that hydrogen was the source.

    According to Professor Friedemann Freund and colleagues at Nasa's Ames Research Center in California, the gas is produced when water molecules trapped inside molten rock break down to release hydrogen.
    "In the top 20 kilometres of the Earth's crust, the conditions are right to produce a nearly inexhaustible supply of hydrogen," said Professor Freund.

    Studies by the team of common rock types such as granite and olivine have revealed extraordinarily high levels of trapped hydrogen. Professor Freund said that his team had "tantalizing evidence" that as much as 1,000 litres of hydrogen may be trapped in each cubic metre of rock.

    Although formidable engineering problems remain to be overcome in abstracting the gas, the sheer volume of the Earth's crust means that such a high concentration would solve the world's energy problems.
    "Everyone thinks of gas and oil as the main sources, and it's very difficult to get anyone to take alternatives seriously," said Dr. David Elliott, the professor of technology policy at the Open University in London. "The possibility of vast reserves of hydrogen in the Earth's crust could change that mindset."

    The low yield of energy from burning hydrogen compared to gas, however, means that vast quantities of rock would have to be mined.

    Professor Freund believes that the extraction and crushing of rock to extract the trapped hydrogen is likely to be prohibitively expensive. The reaction which creates the gas takes place at depths far below those involved in oil extraction, which are typically about two miles down.

    The most promising source of the hydrogen may be geological "traps" similar to those now drilled for natural gas. Professor Freund said: "One of these natural hydrogen fields is already known to exist in North America, and extends from Canada to Kansas."

  4. stop the oil use? no by Lumpy · · Score: 3, Interesting

    not a chance.. not for a long time at least.
    Forcing huge and multiple industries to completely re-tool for a new fuel source will first cause gigantic resistance. The oil companies will scream no way, the car companies will scream no way, and finally the consumer will scream no-way-in-hell!

    Why the consumer screaming? simple.. GM,Ford,Toyota,etc... will intentionally hike prices even higher due to the "forced changes" making you $17,000 budget sedan cost $36,000 and the stupid SUV's costs soar even higher..

    it wont happen, not in our lifetimes, and possibly not in our grandchildrens lifetimes.

    --
    Do not look at laser with remaining good eye.
  5. How bout ethanol? by jjv411 · · Score: 4, Interesting

    Why wait for hydrogen to relieve the dependence on foreign oil. In the states there are thousands of farmers who cannot afford to eat. Why haven't ethanol powered automobiles showed themselves? Corn products seem like a great way to help improve the economy by helping out the farmers, providing new jobs, and lowering the dependence on petrol? What gives? Why are there no ethanol cars?

    1. Re:How bout ethanol? by M-G · · Score: 3, Insightful

      There are ethanol cars. They're all over the roads. And we're being forced by the government to buy gasoline that's 10% ethanol. Do you know why? It's because the farm states have gotten subsidies to produce the stuff and help out the poor farmer. Ethanol is expensive to make, and yields less energy per gallon than gasoline.

      And if you look at most newer Fords, you'll see an extra badge on the car that signifies a flexible fuel vehicle, which can take up to a 15% ethanol concentration.

    2. Re:How bout ethanol? by awptic · · Score: 3, Interesting

      Hemp too. In fact, hemp can product 10 times more ethanol than corn, and has lots of other uses too (fabric mainly).
      I still don't understand why the government isn't looking into this (and corn) as a means to produce energy, it would be in everyone's best interest, and losing our reliance on middle east countries for oil seems like a pretty good idea now, considering all the crap going on over there lately.

    3. Re:How bout ethanol? by mikeee · · Score: 5, Funny

      In the states there are thousands of farmers who cannot afford to eat.

      Huh? Support for this, please? (Farmers having trouble making their loan payments or going bankrupt I might believe...)

      I mean, if they really couldn't eat, they could, I dunno, consume some edible plants. If only there were some way farmers might have access to those...

  6. Re:Dependence on WHAT? by JordanH · · Score: 5, Informative
    • So what exactly is holding back solar power, wind power, and nuclear power?

    Economics. Oil is cheaper to use than any of those. Solar, Wind and Nuclear require big capital investments up front and provide electrical energy which can't be stored without a big drop in efficiency. Oil and hydrogen, depending on how difficult it will be to mine it, don't have this problem.

    • They're all more freely available than hydrogen.

    Are you sure? Hydrogen is the most common element in the universe. If we've found a large, easily tapped reserve, this is a good thing, I think.

  7. Re:Could it be? by Dephex+Twin · · Score: 3, Insightful
    Do you not think that there would just be a new group of powerful companies selling hydrogen instead?

    No doubt about that. But the current powerful oil companies would not be very excited about that unless they could ensure that THEY would be the powerful hydrogen companies as well.

    mark
    --

    If you want to make an apple pie from scratch, you must first create the universe. -- Carl Sagan
  8. Re:Could it be? by Kintanon · · Score: 5, Insightful

    Considering that they already control most of the equipment resources needed for mining and processing pretty much anything I don't think it will be a problem for them to make a lateral move from Oil Conglomerate to Hydrogen Conglomerate.

    Kintanon

    --
    Check out JoshJitsu.info for Brazilian Ji
  9. Right. by cswiii · · Score: 5, Funny

    Could this be the beginning of the end for our dependence on oil?

    I can think of many reasons why it won't.

    1. Re:Right. by Reality+Master+101 · · Score: 5, Insightful

      Sheesh, never use common sense economics when a conspiracy will do.

      Did it ever occur to you that energy company X might just want to one-up their competition by tapping these new resources? Why keep drilling new oil wells (and maybe increase your market share by 1 or 2%) when you can possible drill new wells and open up an entirely new market?

      This is known as Capitalism, my friend. It's a beautiful thing.

      --
      Sometimes it's best to just let stupid people be stupid.
  10. 1,000 liters per m� of rock... by hpa · · Score: 5, Insightful

    The article claims that Professor Freund said that his team had "tantalizing evidence" that as much as 1,000 litres of hydrogen may be trapped in each cubic metre of rock.

    This basically means that any particular volume of rock contains its own volume (at atmospheric pressume, presumably) in hydrogen. Unfortunately, that really isn't that much. It takes much more energy than that to extract and presumably, crush 1 m of rock. The article states this, too.

    The article somewhat confusingly states The low yield of energy from burning hydrogen compared to gas, however, means that vast quantities of rock would have to be mined. Hydrogen is in fact the most energy-rich chemical fuel, per unit weight, in existence, the problem is that at the concentrations they're talking about, this won't be solving any problems any time soon, unless they find these things trapped. Not that unlike drilling for natural gas.

    What might be a lot more promising is that some scientists have been working on bioengineering algae to produce hydrogen when deprived of sunlight. This basically amounts to a very cheap form of solar energy: grow algae in ponds, then pump them into a bioreactor where they produce hydrogen. Leave them in for a few days, then before they start to die off pump them back out. A lot cheaper than refined silicon covering all that area...

  11. The Economy Crude Oil by skwang · · Score: 5, Insightful

    the beginning of the end for our dependence on oil

    I guess I'll bite.

    The problem with the dependence of oil isn't an alternative means. Someone has pointed/will point out that we have many alternative energy sources. Instead oil as a means of energy is dominant because it is cheap.

    The world's energy infrastructure is based on using crude oil. There are oil power plants, oil refineries, gasoline engines, etc. Oil is simply cheaper to use. Companies spend billions of dollars researching new drill sites, lobbying Congress, etc. to maintain oil production because it is cheaper than investing in alternative energy sources; i.e. solar, nuclear.

    Now what if this limitless source of Hydrogen comes on-line? What if we start using it instead of drilling for crude oil? At some point, the demand for oil begins to decline. Seeing as there is still a supply of oil (a diminishing supply, but still a supply) the price of oil will go down. Eventually, oil will be cheaper to use, and begin to rise in demand. A happy medium will be reached where crude oil drilling and this new hydrogen production will co-exist.

    Admitidly, at this point there will no longer be a complete depedence on oil, but I would argue that we (the globe) are not as dependent as the media makes us out to seem. Alternative energies exist, but simply cost more. If we are willing to bear higher costs, we can reduce our oil dependence today.

    As I see it the world's dependence on oil will not diminish with new energy sources. At least not until that source is so incredably inexpensive that it will replace all other energy supplies. Or all crude oil supplies run dry. Perhaps the correct question is not: will hydrogen reduce our oil dependence? But will this new hydrogen supply produce limitless inexpensive energy, so inexpensive that all other means of energy are outpriced?

  12. There are economic challenges to recovery by GodsMadClown · · Score: 5, Insightful

    The original article says:

    "The low yield of energy from burning hydrogen compared to gas, however, means that vast quantities of rock would have to be mined."

    Any petroleum geologist would tell you that there is oodles of available oil in the ground, but it is unprofitable to recover it. That is, it cost more to get it than it would be worth on the market. Obviously, the same economies would apply to recovering the hydrogen trapped in the rock. The profits have to be available to make the business work

    Also, the article says:

    "Energy specialists estimate that oil production will start to decline within the next 10 to 15 years, as the economically viable reserves start to run out."

    The key word here is "economically viable". Think for a moment, what would happen if oil supplies started running low because of a lack of profitable reserves? Demand for oil is pretty inelastic (not dependant on price), so the price would almost assuredly go up, just as when supplies are cut short for other reasons, like an OPEC quota. As the price of oil goes up, reserves that cost more to extract will now be profitable. We'll still have oil, but it will just be more expensive.

    This is why the estimates for the amount of recoverable petroleum reserve are SO varied. When you hear doomsday predictions of running out of oil supply, remember these effects of supply and demand on price and profitability.

    Don't get me wrong, I don't like the rising CO2 levels at all, and I don't think fossil fuels are a sustainable energy source. I just think that clear-eyed skepticism is more productive than knee-jerk idealism.

  13. Re:Could it be? by ergo98 · · Score: 4, Interesting

    Offtopic, but there's something that's been bothering me for wa while: Perpetually the US Administration talks about reducing the dependence on foreign oil, promoting the opening up of the Alaskan Wildlife Refuges for drilling, and basically writing a blank environmental cheque for oil companies to sign. All of this is done under the pretense of being patriotic by reducing the countries strategic vulnerabilities (namely having a primary energy source externally controlled). Yet this is the same administration (I'm not talking about one particular party, or even one make-up of politicians, but I mean government momentum on a whole) that continually refuses to enforce basic fuel efficiency (NOT conservation. There's a difference between conservation and efficiency) directives. I don't have the metrics (nor have I ever looked), but the highways are full of grossly inefficient vehicles (not just large vehicles, either, but additionally inefficient small vehicles. The Chevrolet Cavalier is some ~25% less efficient than most comparably sized competitors). If people want to feel patriotic, they should forsake getting that new Expedition and buy themselves a Dodge Neon or a Toyota Corolla : You're doing a great service to your country.

  14. News Flash by indole · · Score: 3, Funny

    Scientist report vast quanitities of hydrogen in Earths oceans.

    --
    (2,3-Benzopyrrole)
  15. Re:Dependence on WHAT? by ConceptJunkie · · Score: 5, Insightful

    Many alternatives are more freely available than hydrogen, but none of them are particularly efficient nor cheap, except for nuclear, and the only reason we don't use more nuclear power is solely because of political factors.

    <digression>
    Instead of calling it "radiation" maybe we should call it "Patriot Power Rays" or "Atomic Nature Juice". Maybe we're just marketing it wrong, since everyone associates nukes with things like hysterical movies starring Hanoi Jane, or Chernobyl, which was poorly-maintained, obsolete technology run by a bunch of guys with eyebrows like caterpillars and atrocious taste in winter hats who are always calling each other "Comrade" in the hours-long bread lines. Stop thinking "Gamma World" and start thinking "The Jetsons". Hooray!
    </digression>

    The only reason we will ever switch from oil is either because we run out, or we develop something cheaper. From reading the article, it sounds to me like drilling down two miles or so and processing huge quantities of rock to release the hydrogen sounds a lot harder and more expensive than drilling for oil, regardless of how much there is.

    I'm still waiting for a "Mr. Fusion" for my car so I can go 1000 miles on two banana peels and a quarter cup of coffee grounds.

    --
    You are in a maze of twisty little passages, all alike.
  16. Deep Hydrogen and Extraterrestrial Life Forms by No_Weak_Heart · · Score: 3, Interesting

    As noted in this press release, similar hydrogen-consuming microbes may some day be discovered on Mars.

    And if we ever did figure out a way of "mining" this trapped hydrogen, there would be a way to fill up your tank if you went planet hopping :)

  17. Re:Dependence on WHAT? by Ioldanach · · Score: 3, Funny

    I'm still waiting for a "Mr. Fusion" for my car so I can go 1000 miles on two banana peels and a quarter cup of coffee grounds.

    And never be late again, either, with the flux capacitor under the hood.

  18. Re:Could it be? by sulli · · Score: 3, Funny

    But if the nation's Soccer Moms have to give up their Grand Caravans, and the nation's Midlife Crisis Divorced Men have to give up their Range Rovers, then truly, truly I say to you, the terrorists will have won.

    --

    sulli
    RTFJ.
  19. Re:Politics by ConceptJunkie · · Score: 4, Informative

    How many people have ever been killed by nuclear power (_including_ Chernobyl)?

    How many people have been killed mining for coal?

    They are orders of magnitude in difference yet no one is screaming to stop coal mining, which would save many more lives.

    Modern nuclear power plants (unlike wheezy old vintage 1950's Russian Nukinators with big chrome tail fins) have so many protections against runaway reactions its not funny. The only real issues with nuclear power in the U.S. are heat pollution (_not_ radiation) in nearby water and what to do with the waste.

    --
    You are in a maze of twisty little passages, all alike.
  20. Nitpicking details by hey! · · Score: 4, Interesting
    Detail #1:Getting it out for less energy than it will yield will be tough.


    There's probably hundreds of times the earth's mass of methane in Jupiter, but that doesn't make it a viable energy source.


    Detail #2: Water is a potent greenhouse gas.


    Any New Englander knows that it's usually a good twenty degrees warmer in the winter when you have a good cloud cover. Of course, burning gasoline generates water too, so it's a win as a gasoline replacement. However, it is not an energy source that is limitless in the sense it can be used in any amount with no consequences.

    --
    Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
  21. It was a joke! by coyote-san · · Score: 3, Redundant

    Come on, people, it was a joke. A deliberate attempt to imitate the "there's no silver lining so bright that it doesn't contain a dark cloud" crowd.

    --
    For every complex problem there is an answer that is clear, simple, and wrong. -- H L Mencken
  22. Back to biology class! by Nindalf · · Score: 3, Informative

    As far as I know, there are no eletrolytic organisms or other natural process to get the O2 back, so we are screwed.

    Photosynthesis takes CO2, H2O, and sunlight to produce carbohydrates.

    However, new CO2 goes into the air, spreads out more or less evenly, and its precious carbon becomes available to plants around the world. So carbon balances itself pretty quickly, and you have to really work at releasing it faster than plants can suck it up. New H2O vapor mostly falls in the ocean (or winds up there, eventually), where there's plenty of the stuff already, and doesn't promote new plant growth. So there's not much reason to believe that hydrogen will balance itself out naturally.

  23. Re:Could it be? by ergo98 · · Score: 5, Insightful

    You know, Soccer Mom's I really don't have that much of an issue with (presuming that they actually transport large numbers of children around, making the additional space and utility of a minivan necessary), but as you mentioned with the Range Rover (which gets 12mpg in the city, 15mpg on the highway. A Toyota Camry gets 24/33mpg, by comparison, and is actually a mid-sized car. A Corolla gets 32mpg/40mpg): There are a massive number of vehicles out there that have absolutely no use or utility whatsoever. Indeed, the public at large doesn't pay enough attention to fuel economy when purchasing cars either (though they absolutely should if they don't like killing kids from emphyzema and they're patriotic), and this is perhaps because of pump prices that too low, considering (why is it that a bottle of Coke costs me about 3x more than some oil which was dug up underground half a world away, processed, transported in many stages, and has about 60% of its price as taxes?).

    If the US really cared about being strategically strong (presuming that the administration wasn't in the oil company's pockets) they would impose a large tax (with proceeds going to alternative energy research) based upon energy efficiency, or rather lack thereof, in vehicles.

    Sidenote: I was recently urged to buy a minivan because "What about when you go camping in the summer? You'll need the space!" : That in a nutshell defined why most people have inappropriately sized vehicles for daily commutes and runs to the supermarket -> For that once every two year event where they actually might need it. RENT SOMETHING FOR CRYING OUT LOUD! I'm a big fan of rentals, and for a low cost you can have the larger vehicle for the period that you need it, going back to a more efficient configuration when you're done.

  24. Re:Dependence on WHAT? by Ioldanach · · Score: 4, Insightful

    Do you know how much energy it takes to make a solar panel?

    I'm afraid I don't know, though I'd be surprised if a single 100W solar panel exceeded the 3.65 Megawatt-Hours it can generate over the course of its service life.

    They are energy carriers, because it takes more energy to produce them than you get from burning them.

    That's because the production energy for crop based fuels includes all that solar energy lavished on them for months. The available solar radiation is approximately 1.4 kW/m^2. Spread that over a 2 month (for sake of argument) crop with about 8 hours a day of energy and a single square meter of crop took in 672kWH of energy. BP, a manufacturer of solar cells, cites figures that show that 1.4kW/m^2 figure is for solar radiation outside the earth's atmosphere, and puts the available solar radiation at about 1 kW/m^2 at sea level, meaning the same crop took 480kWH to grow.

    I'd also like to note that, with the same calculation, a theoretical 100% efficiency solar panel of 8m^2 (or about 9'x9') could power a large house with air conditioning and have room to spare. (alternative energy advocates frequently point to how great their house is because it uses so little energy, but they also fail to mention that air conditioning is the first thing to go since it is such an energy hog. I prefer to compare to the current average homeowner's situation, for a more realistic picture) That's calculated as 1.0kW*5H*30days*8m^2=1200kWH/month assuming only 5 hours/day since a fixed solar panel isn't always exposing a 100% cross section to the sun.

  25. Somebody mod this guy up.. by xtal · · Score: 3, Interesting

    Too many people get confused. If you have 100J of energy, and it takes 150J of energy to pump a liter of oil out of the ground, even if I give you a million dollars for that liter, you can't get it out of the ground. Unless, perhaps, I give it to you in paper money that you can burn to get the extra energy. See the problem?

    If this hydrogen can be extracted at a net energy profit, and there's as much as they say there might be, I'll start worrying about retirement savings again.

    --
    ..don't panic
  26. Re:Could it be? by ShavenYak · · Score: 3, Informative
    Here's a fairly complete list of available small cars and their fuel efficiencies (where the same model has multiple engine choices, I've listed the most efficient). I've also listed the engines' power for comparison's sake. Note that these numbers are for manual transmissions.

    It looks like Saturn was the American manufacturer you should have mentioned for fuel economy.

    1. Volkswagen Golf (diesel) (42/49, 90hp)
    2. Honda Civic (36/44, 117hp)
    3. Toyota Echo (34/41, 108hp)
    4. Mitsubishi Mirage (32/39, 92hp)
    5. Saturn SC (28/40, 100hp)
    6. Ford Focus (28/36, 110hp)
    7. Dodge Neon (28/34, 132hp)
    8. Nissan Sentra (27/35, 126hp)
    9. Kia Rio (27/32, 96hp)
    10. Chevrolet Cavalier (24/33, 115hp)
    11. Volkswagen Golf (gas) (24/31, 115hp)
    --

    Hey kids, there's only 5 days left 'til Yak Shaving Day!
  27. Thermal inversions by coyote-san · · Score: 3, Interesting

    The reason for the bad Denver smog was thermal inversions where a layer of cold air near the ground was capped by warmer air above. That's why it could be sub-zero on the plains, but 20-30 degrees warmer if you went into the mountains.

    We still have those inversions (and "no burn days"), but the bad smog was largely eliminated as newer, cleaner cars replaced the older fleet. Unfortunately we still have a stupid oxygenated fuels program in the winter months, and pollution levels are rising again (but still below Federal guidelines) due to large number of people who moved into Denver and insisted on big SUVs for the "lifestyle" nonsense.

    --
    For every complex problem there is an answer that is clear, simple, and wrong. -- H L Mencken
  28. Who cares? Hydrogen is a sucky fuel anyway by WolfWithoutAClause · · Score: 4, Interesting

    There's lots of problems with hydrogen:

    a) its energy density is pitiful (about 1/14 IRC of gasoline, so you'd have to have a tank 14x bigger)

    b) its best stored in liquified form for maximum energy density (liquid hydrogen needs incredibly high insulation values, and tends to freeze things solid, or condenses oxygen- trust me, either is very bad, and its density still sucks- check out the Space Shuttle main tank, its enormous!)

    c) alternatively you store it in a pressurised tank. Pressurised tanks are heavy as heck. Or you can use a rare earth catalyst to store it in. However, the overall weight is about the same if you do so, TOO HIGH. So big deal.

    d) Hydrogen can go bang (in an enclosed space the explosion can be awesome). Sure, gasoline does that too. However hydogen leaks out much more easily.

    e) Hydrogen embrittles many kinds of metals, once that has occured the metal fails catastrophically.

    f) Hydrogen escapes from just about any container; the molecule is just too small to keep in in most cases; still you can control it in most cases, but it's awkward.

    All in all, hydrogen is at best a waste of space and at worst a waste of time. Yeah, so it doesn't make any CO2. So what? We've got this handy recycling system called plants. Please go out and grow some, so I can carry on burning my hydrocarbons ;-)

    --

    -WolfWithoutAClause

    "Gravity is only a theory, not a fact!"
  29. more about oil dependence by loosenut · · Score: 3, Informative

    Another posted mentioned that alternative energy sources will not replace oil, because oil is so cheap. The poster also said that another reason for oil to be replaced is if we run out, or if supplies dwindle enough that we can no longer provide enough oil for everybody (which ties into the rising cost argument).

    According to Oilcrisis.com, when we hit the point (within the first quarter of this century) that we need to switch over to an alternative energy source, it will be too late. Our infrastructure depends on oil, and switching every motor vehicle, truck, airplane, cargo ship, and train to an alternative energy source will be a massive endeavor. Perhaps impossible to perform without the support of the infrastructure itself.

    I would like to encourage everyone to support alternative energy before this point. We can't afford to wait until it is cheap.

  30. Re:Could it be? by Galvatron · · Score: 3, Informative
    If the US really cared about being strategically strong (presuming that the administration wasn't in the oil company's pockets) they would impose a large tax (with proceeds going to alternative energy research) based upon energy efficiency, or rather lack thereof, in vehicles.

    They do (well, I'm not sure it goes to alternative energy research, but the tax exists). This is why those ultra souped up sports cars cost hundreds of thousands of dollars. Below a certain fuel efficiency level, there's something like a 100% tax. The problem is, if you eliminate the bottom half of vehicles in fuel efficiency, then the 25%-50% group will become the new bottom half. There will always be vehicles that seem fuel inefficient compared to their bretheren.

    --
    "The question of whether a computer can think is no more interesting than that of whether a submarine can swim" -EWD
  31. Re:Could it be? by david+duncan+scott · · Score: 3, Insightful
    I really, really hate this sort of taxation, though. It's an underhanded way of doing things.

    We're supposed to be running a free society. The theory is that we explain things to people, and they decide what to do. We explain that we feel that gas is too important to waste, and people (perhaps) agree with us and use it carefully. Or maybe they don't, but that's because they're free adults, and they don't have to agree with anybody, not even the Forces of Truth and Justice.

    If it's really urgent, then be up front about it. Ration gas, if you think the situation warrants it and the public will stand for it. But rationing through taxation is a horrible idea -- it creates the impression that taxation is arbitrary, certainly encouraging tax evasion ("Oh, they don't need the money -- they're just using taxes to manipulate you!"), it creates a government dependance on the very thing that they're supposed to be discouraging (how much has gambling increased in the US since states found it such a lucrative thing and started actively encouraging it? What would they do if gas tax revenues rose for several years and then fell?), and it's simply dishonest. If you feel it necessary to be the nation's parent, then be an honest parent -- don't let people buy their way out of the rules.

    --

    This next song is very sad. Please clap along. -- Robin Zander

  32. Once again... by BelDion · · Score: 3, Insightful

    Every time any sort of alternative fuel/transportation or whatnot comes around people ask if it will be the end of the use of oil.

    It wont.

    As long as there is oil left in the ground the large multinational corporations and every single oil mogul will not let this happen. There are plenty of good and efficient ways to replace the use of oil right now. Not gonna happen; the billionaires will never ease up on selling oil until there isn't an extractable drop left anywhere. Even then, they'll probably synthesize it themselves, strongarm the energy concerns, and sell it at incredibly high prices.

    But hey, I'll be long dead before then. Until that day, screw em, I'm walking.

    --

    I am BelDion's .Sig; Who the hell is Jack?
  33. I Think That This is a Hoax... (no, really!) by dbretton · · Score: 3, Informative

    Paraphrasing:

    As much as 1000 liters of Hydrogen gas may be stored in each cubic meter of rock!

    Wow!

    Let me see now... 1ml = 1cc
    100^3 cc = 1m^3
    10^6 cc = 1m^3

    1L = 1000ml = 1000cc = 10^3cc

    (10^6 cc/m^3)*(1L/10^3cc) = 10^3L/m^3

    = 1000L/m^3

    Gee, either that's some REALLY HEAVY hydrogen or som REALLY LIGHT rock!