No, we don't. If you don't have the water, or at least the hydrogen and oxygen, you don't have a large body of water to moderate the temperature and host cyanobacteria to create oxygen, which takes hundreds of thousands to millions of years, assuming you have enough bound oxygen to begin with. We don't have the technology. We can't even filter out a little carbon dioxide in our own atmosphere.

That assumes the winds are perfectly linear and even fairly constant, which of course, is impossible on a sphere.

The problem is they are advertising a "free" upgrade to everyone with Win 7+ right now. Who doesn't want a FREE upgrade? Obvioously /. readers but most consumers think they are saving money with a free upgrade to an OS that is in fact pwning them.

No, she doesn't. He specifically said:

"but she is just not very passionate about coding or IT in general."

So yes, it does look like he's trying to push her. Most women I know take a few months of maternity leave, not a few years, so maybe that is why he is pushing, but he's pushing her in the wrong direction.

How is using blu ray cheaper than hard drives?

3 TB will fit on 120 25-GB BD-Rs. At 40 cents each, that's $48 in media costs. If you do like I do and reserve 20% for dvdisaster error-recovery data, you're still only looking at $60.

A 3 TB WD Green will set you back $95. (Want to spring for the NAS-rated Red drives instead? That'll be $119. Their absolute cheapest 3 TB hard drives are a couple of models from Seagate and Toshiba at $90 each.)

The trick is getting BD media into the terabytes and getting it at a price point where it is decently affordable. For example, a 100 GB BDXL disk is $65, but it should be about 10% of that price in order to be a viable backup medium.

My last spindle of 25 GB BD-Rs cost me maybe $0.60 each or so. I could drive down to Fry's right now and pick up a spindle for about $0.80 each. A 4x increase in storage density isn't worth a two-order-of-magnitude increase in price. I would be surprised if Farcebook didn't arrive at the same conclusion.

Going by the numbers from the video in TFA, they're getting over 10k BD-Rs in a rack. While the basic concept isn't new, they appear to have developed it to a considerably higher density.

If they are storing their photos on facebook, they are doing it wrong.

FTFY. I can kinda understand posting stuff to Farcebook so others can view it, but using it as your primary storage medium? That's at least a dozen different kinds of wrong.

Just another reason to be against liberty.

And thus have no chance of beating Hillary. Gender based voting is going to become a major issue this election.

That first sentence proves that you have NOT read Laudato Sii, and are still speaking out of ignorance- because just about everything you just said is in there.

ALL AF bases and the majority of the the other services did away with base stickers several years ago and now everyone in the vehicle over the age of 16 has to display a valid Government issued ID to get on base.

All? I'd swear last time I accompanied my father (retired AF) on base at either Nellis or Wright-Patterson, the skycop just asked for his ID, not mine. It might be different overseas, and it's been different here at various times in the past, but unless they've changed things yet again since this past December, they most likely only care about the driver's ID.

Or we build storage.

You don't HAVE to generate it within a fraction of a second of when it's used - that's just been convenient so far. So it's not with renewables? Fine! Store that juice!

When Bill Gates says:

"There's no battery technology that's even close to allowing us to take all of our energy from renewables and be able to use battery storage in order to deal not only with the 24-hour cycle but also with long periods of time where it's cloudy and you don't have sun or you don't have wind."

he's totally wrong.

For starters, there's Vanadium Redox. A flow battery (pumped electrolyte): Power limited by the size of the reaction device's electrode and membrane assembly. Energy storage limited by the size of the tanks. It's mainly used for utility-level energy storage down under (Oz or Nz, I think), because the patents are still fresh and the little startup doesn't want to license it to others. Vanadium is some substantial percentage of the Earth's crust so there's no shortage. Using the same element (in different sets of oxidation states - vanadium has (at least) 6 of 'em) for BOTH electrodes means leakage of small amounts of the element through the dilectric membrane doesn't poison the battery.

Lithum cells are already good enough to run laptops, cars, and houses, and are improving at a Moore's Law like rate. The elements are also not rare and the use of several nanotech techniques on the electrodes have drastically increased the lifetime and other useful properties. (We just had reports of yet another breakthrough within the last day or so, doubling the capacity and extending the life.) The fast-charge/discharge cells are also extremely efficient. (They have to be, because every horsepower is 3/4 kW, so even a few percent of loss would translate to enormous heat in an automotive application.) The main problem is to get companies to "pull the trigger" on deploying them - and risk their new production line being rendered obsolete before the product hits the market by NEXT month's breakthroughs.

Lead-acids need to be replaced once or twice per decade. But they have been the workhorses for off-grid since Edison's and Nikola Tesla's days, and still are today (though not for long, if Elon Musk and the five billion dollars of investments in his lithium battery plant have anything to say about it).

Nickel-Iron wet cells are a technology developed by Edison. They have more loss than lead-acids. But they literally last for centuries. If you have a moderately steady renewable source (like some combination of enough wind and a big enough windmill, enough sun and a big enough solar array, or a stream and a big enough hydro system) you'll have enough more power than you need to keep them topped off. They're just fine for covering days, or even a couple weeks, of bad generation weather, or down-for-maintenance situations. That IS what they were in at least one hydro plant I know of. (The problem is finding them: They last so long you only need to buy them ONCE, so there aren't many plants.)

That's just four FAMILIES of entirely adequate solutions. There ARE more.

So Bill is either uninformed, talking through his hat, or starting on the "embrace" stage of yet another:
  - Embrace
  - Extend
  - Extinguish
  - PROFIT!

we have a way to turn electricity directly into heat. But there is no direct way to turn heat into electricity. It has to go thru a second step of mechanical energy to spin a magnet to create electricity.

You can go from electricity directly to heat because that increases entropy. You can't go from heat to anything useful because that decreases entropy, and entropy of a closed system only increases. The best you can do is a heat engine, working off a temperature DIFFERENCE. (Some of them also work backward as heat pumps, to go from electricity to heat more effectively, by also grabbing some heat from elsewhere to include in the hot end output.)

There ARE at least two major forms of electronic heat engines - direct from temperature differences to electricity, with only charge carriers as the moving parts: Thermoelectrics (thermocouples, peltier junctions, and thermopiles of them) and thermionics (both heat-driven vacuum diode generators and a FET-like semiconductor analog of them). Both are discussed in other responses to the parent post.

TEs are ridiculously inefficient and aren't looking to be much better anytime soon

Because thermoelectric effect devices leak heat big time.

However there's also thermionics. The vacuum-tube version is currently inefficient - about as inefficient as slightly behind-the-curve solar cells - due to space charge accumulation discouraging current, but I've seen reports of a semiconductor close analog of it (as an FET is a semiconductor close analog of a vacuum triode) that IS efficient, encouraging the space charge to propagate through the drift region by doping tricks (that I don't recall offhand). The semiconductor version beats the problems that plague thermoelectrics because the only charge carriers crossing the temperature gradient are the ones doing so in an efficient manner, so the bulk of the thermal leakage is mechanical rather than electrical, and the drift region can be long enough to keep that fraction down.