It's not about the concentration (absolute or relative), but the effect. If someone started to double the concentration of O2 in out atmosphere from 21% to 42%, I would call that pollution because of the large number of negative externalities (ie. due to the impact it would have on forest fires). If someone increased N2 concentration from 78% to 89%, we'd all have a harder time getting to oxygen we need to function, so continued willy-nilly dumpin of N2 into the atmosphere would be pollution.

Actually, changes to low concentrations of greenhouse gases has a larger effect than changes at high concentrations. In a simplistic picture where the transmissivity of the atmosphere in a certain band depends on a single molecule, you can write the transmissivity of the atmosphere as I = 2^(-t/h). Where I is the % of the light that makes it out of the earth's atmosphere, t is the thickness of the molecule, and h is the level at which that molecule blocks half the light from making it out of the atmosphere.

Let's assume that 200ppm will block out half the light. At 280ppm, 38% of the light made it through. At 390ppm, 26% of the light makes it through. At 480ppm, 19% of the light makes it through. By 5%, basically no light makes it through, which means that from 280ppm, 480ppm is halfway to 5% and at 390ppm (where we are now) we are a third of the way to the effect of 5%. In actuality, every molecule has multiple absorption bands, and I'm sorry I don't have exact numbers handy. But, this exponential dependence is one of the reasons why methane, which is normally at a much lower absolute concentration, is a more potent greenhouse gas than CO2 (the other reason being that the ocean won't gradually reabsorb it).

When you submit a paper to a journal you typically sign a copyright transfer agreement. These vary a bit from publisher to publisher, but all of the ones I have seen state (and I just checked the two I have in my desk):
1. That the copyright (but not related patent rights) is transferred to the publisher, but the authors retain the right to make personal copies.
2. That it is original work, not published before in any language and is not being considered for publication elsewhere.

IANAL, but my understanding is that the first clause prohibits you from submitting the article to another journal and the second clause prohibits you from having already submitted it to another journal.

As far as I can tell, it's quite effective.

First of all, in 1000 hours (typical incandescent lifetime) a 60W equivalent CFL saves $5.00 in electricity, so if the price premium for a CFL is less than that, it's still the economical choice (assuming $0.11/kWh) even if it lasts no longer.

My main point is that the way various light bulbs (and CFLs in particular) burn out is actually a pretty complicated process, but LEDs are pretty much the best for most non-high-temperature applications (ie. oven lights), and that they aren't lying maliciously; your usage most likely just differs from their test process. The test process for CFLs involves something like turning it on for 5+ hours at a time, which is typical lighting use in commercial or industrial buildings, but in most people's home many lights are on for 5-10 minutes at a time (bathrooms, garages, halls, walk-in closets, etc.) so they are turned on/off 25 times as much for the same amount of runtime---which results in early failure because of the loss of emission mix. Alternatively, if the power from the grid is of poor quality in your home, the ballast or emission mix may contribute to early failure.

You know that California has tiers and, yes, if you use a lot of electricity you get charged a higher marginal rate, just like income taxes. PG&E charges ~$0.12/kWh for the first ~300kWh per billing cycle (~30 days) and $0.33/kWh after that. Seems pretty reasonable to me; the people who use a lot are encouraged to conserve more through higher prices. I use 200kWh/month, I only pay $0.12/kWh. Also, the average stated in the report doesn't say if it's the mean or the median, but it's important when you have tiers because a small number of people can drive up the mean, whereas most customers actually pay much less than the mean.

First, not everyone has a ID that is valid for voting* and making people who don't have one anyway pay to get one is basically a poll tax. Shouldn't an ID card required to vote be free?

*The following government issued photo IDs are not valid for voting: National Labs ID, State University IDs, Community College IDs, etc.

I don't know why no one includes summary's at the top of EULAs. It's not like it's that hard of an idea to think of and I've yet to hear a single objection (though I'm sure /. can help with this). No one is actually saying you can't have pages and pages of precise details spelled out in pages and pages for the lawyers.

By the way, this is suggested on page 2 of the article for all of you who either didn't read the article, or refuse to bother going to page 2 of an article that has no reason not to be on a single page.

Last I heard, the first 1,000 Model Ss will have 230 or 300mi ranges, so the 160mi range owners will not even exist for a while.

Possible Secret Plan:
1. Build 1 supercharger halfway between LA and SF to accomodate owners of the 300mi (and maybe 230mi) range Model S and all Roadster owners, if I understand correctly.
2. Build 2 more superchargers halfway between each metropolis and the first supercharger to accomodate all other Model S owners.
3. Profit.
4. ???
5. More profit.

Yes, the original poster isn't quite right, but you are ignoring the fact that EVs are basically designed to be topped off every night instead of only filled when it gets near empty, as is typically done with gas cars. GP should have said that you can charge it from empty overnight on household power (240V/35A). Even most US houses have this anyway because electricity is delivered on +120V and -120V wires, and it's just that most appliances that aren't electric ovens, dryers, and/or air conditioners, run between 120V and neutral while those large power appliances run between +120V/35A and -120V/35A.

Since most electricity at night costs ~$0.11/kWh and gas costs ~$4.00/gal, going 100 miles costs $3 in a Roadster (27kWh) or $8 in a Prius (2gal). I haven't ever bought electricity in another country, but I know the gas is sure way more expensive in the EU so I expect one would get the same result there.

So a one-car family probably shouldn't have an EV (until we get 1000 mile batteries), in case they need to take a road trip. But many American middle-class families have 2 (or 3) cars, 1 of which could be an EV.

I don't understand why we don't just build pyramids, but with radioactive waste instead of dead pharaohs. They've proven that they can last for 4500 years and counting. You can build them almost wherever you want (subject to only to fault lines, nearby human populations, and proximity to radioactive waste generation).

Also, by this point, I'm not sure Yucca Mountain would be able to hold all of our high-level radioactive waste anyway.