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Submission + - Human sperm produced in the laboratory (bbc.co.uk) 1

duh P3rf3ss3r writes: The BBC is carrying a report from a team of researchers at Newcastle University who claim to have developed the first "artificial" human sperm from stem cells. The research, reported in the journal Stem Cells and Development involved selecting meristematic germ cells from a human embryonic stem cell culture and inducing meiosis, thus producing a haploid gamete. The authors claim that the resulting sperm are fully formed, mature, human sperm cells but the announcement has been greeted with mixed reaction from colleagues who claim the procedure is ethically questionable and that the gametes produced are of inferior levels of maturation.
Music

Submission + - Pandora no longer completely free

AbyssWyrm writes: Today, I received an email (alternatively, see the blog) from Tim Westergren, the founder of Pandora, informing me that Pandora will no longer free for all users. Instead, it will be really cheap — for those with a free account, there will be a cap of 40 hours per month, and a user may pay a one-time fee of $0.99 to resume listening to music unlimited for a month. According to the blog entry, this will affect the top 10% of listeners.

Certainly not a bad deal considering the price, and I suspect that Pandora is one of few free internet resources whose users are loyal enough to pay a small fee to keep it afloat. Hopefully this does not become a slippery slope.

Comment Re:Mod Article -1 Whiner (Score 1) 387

Um, do you watch TV? "Good looking women stereotyped as airheads" was in the first example in the article, and is prevalent throughout Friends. Southerners stereotyped as trailer trash is virtually the premise of King of the Hill. As for the rich folk, I don't think I've ever seen a rich folk not stereotyped that way -- for instance Lois' dad in Family Guy, Mr. Burns in The Simpsons, the villain in any Adam Sandler movie. et cetera.

Comment Historical math books and papers (Score 1) 451

For math, remember that you'll also need to look at papers published. One of Gauss' works launched the field of intrinsic differential geometry, I think it's title went something like "On the geometry of curves and surfaces." Also Gauss' Disquisitiones Arithmeticae. You might try history books for other good leads -- the standard references in the history of math is Morris Kline's "Mathematical Thought from Ancient to Modern Times." Something of Riemann should be important, since he developed multivariable integration.

Comment Re:Any abstract algebra text (Score 1) 630

Sort of. I read Bell's The Development of Mathematics a couple years ago and spoke with a philosophy of math professor about it, who gave me the opinion that I stated above regarding Bell. The book was enjoyable, but in my philosophy professor's opinion at least, not reliable. He recommend Kline's Mathematical Thought from Ancient to Modern Times, which is 1300 dry pages. Perhaps if you have an interest in a particular episode of math it would be a good book, but I'm pretty sure it was not intended as an actual straight-through read. I don't know any more enjoyable math history read.

Comment Re:Any abstract algebra text (Score 1) 630

I also want to recommend Men of Mathematics by E. T. Bell. The calc kids were very interested to know about Newton and Riemann's lives. Considering that most of what we do in middle and high school is actually math history, it seemed fitting to bring some of the personalities in.

It's worth noting that E.T. Bell tends to be full of errors, and occasionally just makes sh*t up.

Data Storage

"Magnetic Tornadoes" Could Offer New Data Storage Tech 109

coondoggie writes to tell us about the latest technique researchers are investigating as a possible means to store data, magnetic tornadoes. "Conventional computer memories store data in "bits" that consist of two magnetic elements that record data in binary form. When these elements are magnetized in the same direction, the computer reads the bit as a '0'; when magnetized in opposite directions, the bit represents a '1,' researchers stated. According to scientists, a vortex forms spontaneously — one vortex per disk — in a small magnetic disk when the disk's diameter falls below a certain limit. Although the vortex does not whirl about like a meteorological tornado, the atoms in the material do orient themselves so that their magnetic states, or 'moments,' point either clockwise or counterclockwise around the disk's surface. At the center of the disk, the density of this rotation causes the polarity of the vortex core to point either up out of the disk or down like a tornado's funnel, researchers stated. Because the vortices that form on the disks contain two independently controllable and accessible magnetic parameters, they could form the basis for quaternary bits that would contain data written as a 0, 1, 2, or 3."
The Courts

17,000 Downloads Does Not Equal 17,000 Lost Sales 398

Andrew_Rens writes "Ars Technica has a story on a ruling by a US District Judge who rejects claims by the RIAA that the number of infringing downloads amounts to proof of the same number of lost sales. The judge ruled that 'although it is true that someone who copies a digital version of a sound recording has little incentive to purchase the recording through legitimate means, it does not necessarily follow that the downloader would have made a legitimate purchase if the recording had not been available for free.' The ruling concerns the use of the criminal courts to recover alleged losses for downloading through a process known as restitution. The judgement does not directly change how damages are calculated in civil cases."

Comment Re:Probably coincidence. (Score 4, Insightful) 480

I think your logic is incorrect. The original poster did not say "my server went down around midnight, could this be a coincidence?" rather he said "my server, which has a particularly excellent track record of not going down, did so near midnight with very high precision. Could this not be a coincidence?" Given that this happening at any specific time is very unlikely compared to the relative abundance of rollover errors, this is a very legitimate hypothesis. Furthermore your argument is essentially saying that anything with a non-zero probability of occurring randomly is probably not a coincidence. Otherwise, instead of comparing to some 50 million servers you ought to be comparing to a much smaller number of servers meeting the description of the original poster's. I don't think you pose any legitimate argument that this is coincidental, and it strikes me as very probable that it is not.

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