Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
Earth

Doubling of CO2 Not So Tragic After All? 747

carvalhao writes "The Register reports on a study from NASA and the US National Oceanic and Atmospheric Administration that claims that new climate models that account for the effects of increased CO2 levels on plant growth result on a 1.64 C increase for a doubling of CO2 concentrations, a far less gloomy scenario than previously considered."
Government

Pentagon Papers Ellsberg Supports Wikileaks 464

wierd_w writes "Daniel Ellsberg says: 'Every attack now made on WikiLeaks and Julian Assange was made against me and the release of the Pentagon Papers at the time.' Due to the recent debates over the pros and cons between the wikileaks releases and those of the historic 'Pentagon papers,' Daniel Ellsberg, who released the pentagon papers in 1971, has written an editorial on the subject declaring that he rejects the mantra of 'Pentagon Papers good; WikiLeaks material bad,' and that further 'That's just a cover for people who don't want to admit that they oppose any and all exposure of even the most misguided, secretive foreign policy. The truth is that every attack now made on WikiLeaks and Julian Assange was made against me and the release of the Pentagon Papers at the time.'"

Submission + - Doubling of CO2 not so tragic after all? (theregister.co.uk) 4

carvalhao writes: The Register reports on a study from NASA and the US National Oceanic and Atmospheric Administration that claims that new climate models that account for the effects of increased CO2 levels on plant growth result on a 1,64 C increase for a doubling of CO2 concentrations, a far less gloomy scenario than previously considered.

Submission + - Ellsberg supports wikileaks (ellsberg.net)

wierd_w writes: Daniel Ellsberg: “EVERY attack now made on WikiLeaks and Julian Assange was made against me and the release of the Pentagon Papers at the time.”

Due to the recent debates over the pros and cons between the wikileaks releases and those of the historic "Pentagon papers", Journalist Daniel Ellsberg, who released the pentagon papers in 1971, has written an editorial on the subject declaring that he rejects the mantra of “Pentagon Papers good; WikiLeaks material bad", and that further “That’s just a cover for people who don’t want to admit that they oppose any and all exposure of even the most misguided, secretive foreign policy. The truth is that EVERY attack now made on WikiLeaks and Julian Assange was made against me and the release of the Pentagon Papers at the time.”

NASA

Submission + - New NASA Model Refutes Global Warming Alarmists (theregister.co.uk)

Dialecticus writes: According to an article by Lewis Page at The Register, NASA says that most theoretical models of global warming fail to take into account the cooling effects of how plant life would react to higher CO2 levels in the atmosphere. NASA's new model reportedly indicates that even something as extreme as a doubling of current CO2 levels would only result in a 1.64 degree Celsius increase in overall global temperatures, with temperature increases over land being even less than that. The article does not specifically mention whether increased photosynthesis would have a natural regulating effect on CO2 levels due to the commensurate increase in the rate of naturally occurring carbon sequestration.

Submission + - Julian Assange arrested in England (belfasttelegraph.co.uk)

SJ2000 writes: "Scotland Yard has confirmed that Julian Assange has been arrested by police in England... It is expected he will appear before an extradition hearing at Westminster Magistrates' Court today for a ruling to be made on whether or not he should be sent to Sweden."

Submission + - Why WikiLeaks is good for America (wired.com)

Kickassthegreat writes: Evan Hansen, Editor-in-Chief of Wired.com, has taken the bold move of standing up for WikiLeaks in an editorial posted tonight on Wired.com. Will more media outlets follow their lead, or will we soon see Wired.com denounced by American politicians for 'providing material aid to terrorists'?

Comment Re:unobta'i'nium would be even nicer (Score 1) 160

Brought to you by the letter I and a spelling nazi ;)

I left out the extra i intentionally because it results in a more proper spelling which also looks more like a real element name, such as titanium or germanium, whereas there are no real element names which end in ainium. The "correction" you suggest is actually an alternate form.

I'm afraid you'll have to turn in your spelling nazi license now. ;)

Education

Astonishing Speedup In Solving Linear SDD Systems 157

eldavojohn writes "A new paper (PDF) out of Carnegie Mellon University shows how to solve symmetric diagonally dominant linear systems much faster than before. The technique employs graph theory, randomized algorithms, and linear algebra to achieve an astonishing advantage over current methods to solve such systems. From the article: 'The result is a significant decrease in computer run times. The Gaussian elimination algorithm runs in time proportional to s^3, where s is the size of the SDD system as measured by the number of terms in the system, even when s is not much bigger the number of variables. The new algorithm, by comparison, has a run time of s*[log(s)]^2. That means, if s = 1 million, that the new algorithm run time would be about a billion times faster than Gaussian elimination.' Developers out there who maintain matrix packages and linear algebra tools might want to take a peak at the paper. Anyone who has modeled real-world systems will be able to tell you that speedups in linear algebra algorithms have a weighty effect on efficiency in simulations — especially as one approaches the theoretical limits of optimality. This research is currently being presented at the IEEE Symposium on Foundations of Computer Science."
Displays

Why Are We Losing Vertical Pixels? 1140

An anonymous reader writes "Switching from 1600x1200 to wide 1680x1050 to HD 1600x900, we are losing more and more vertical space, thus it is becoming less and less simple to read a full A4 page or a web page or a function call. What's the solution for retaining the screen height we need to be productive?"

Slashdot Top Deals

Trap full -- please empty.

Working...