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Earth

Study: Antarctic Sea-Level Rising Faster Than Global Rate 302

An anonymous reader writes with this bit of good news for everyone who is waiting for their homes to one day be on the beach. Melting ice is fuelling sea-level rise around the coast of Antarctica, a new report in Nature Geoscience finds. Near-shore waters went up by about 2mm per year more than the general trend for the Southern Ocean as a whole in the period between 1992 and 2011. Scientists say the melting of glaciers and the thinning of ice shelves are dumping 350 billion tonnes of additional water into the sea annually. This influx is warming and freshening the ocean, pushing up its surface. "Freshwater is less dense than salt water and so in regions where an excess of freshwater has accumulated we expect a localized rise in sea level," explained Dr Craig Rye from the University of Southampton, UK, and lead author on the new journal paper.
Earth

Climate Damage 'Irreversible' According Leaked Climate Report 708

New submitter SomeoneFromBelgium (3420851) writes According to Bloomberg a leaked climate report from the IPPC speaks of "Irreversible Damage." The warnings in the report are, as such, not new but the tone of voice is more urgent and more direct than ever. It states among other things that global warming already is affecting "all continents and across the oceans," and that "risks from mitigation can be substantial, but they do not involve the same possibility of severe, widespread, and irreversible impacts as risks from climate change, increasing the benefits from near-term mitigation action."

Comment Re:Let's do what every other third world country d (Score 4, Interesting) 108

Let's just copy the RD180. I doubt it has any patent ecumberances.

They've already licensed the damn thing for domestic production from the beginning and had a good decade where they could have set up their own factory and had the Russians come in and willingly ensure they are being produced correctly and fix any detail not conveyed properly on the plans. In fact, I believe that the RD-180 is more of a work-for-hire specifically commissioned for Lockheed's requirements.

Now everything is sour and steps to remedy it look political, rather than just a way of giving jobs for American blue collar labour, which is how it would have appeared before.

The RD-180 is a good engine that provides staged combustion performance and efficiency at similar cost to American gas generator cycle engines. The only problems with it is that it was really hard to design, which is irrelevant when you have the plans anyway. It would be a shame for NIH syndrome to screw up America's capability to launch satellites.

Comment Re:Too much good content is deleted at Wikipedia. (Score 2) 239

Notability is important for preventing a potentially slippery slope towards Wikipedia being expected to have an article on every shop, every street, every apartment complex, every popular teacher, and every creative work ever appreciated by more than 10 people.

However, there is something frankly awful about the way it is handled.

Deleting an article should be a grim and thankless task, carried out in the stoical way that a county bailiff would hang or brand a petty thief. Instead, it seems to be a matter of great pride and satisfaction to those who elect themselves to carry it out. These folks really seem to enjoy making up pedantic excuses to remove things, even when faced with strong opposition and enough evidence to at least raise reasonable doubt. When I have checked many of these editor's commit logs, I frequently find that they do little else but marking other articles for deletion, adding "citation needed" after junior highschool level facts and giving barnstars to other like minded nimrods.

If one has contributed in good faith to an article that has been marked for deletion or even appreciated reading one of these articles, it is hard to maintain one's passion for the project. Back when I was a regular contributor, I was creating articles for large international airlines and the like. Then when those were all finished, I made ones for well known video games, books, composers, etc. After those were done, there seemed like nothing remaining but the obscure. But at this time, it was so hard to be excited when one needs to justify each time why Wikipedia would not be better off if what you just wrote was erased, So for the last 7 years, I've pretty much just changed a comma or semicolon here and there.

Earth

Cause of Global Warming 'Hiatus' Found Deep In the Atlantic 465

vinces99 writes with news about a study that may account for a slowdown in air temperature rises. Following rapid warming in the late 20th century, this century has so far seen surprisingly little increase in the average temperature at the Earth's surface. More than a dozen theories have now been proposed for the so-called global warming hiatus, ranging from air pollution to volcanoes to sunspots. New research from the University of Washington shows the heat absent from the surface is plunging deep in the north and south Atlantic Ocean, and is part of a naturally occurring cycle. The study is published in Science. Subsurface ocean warming explains why global average air temperatures have flatlined since 1999, despite greenhouse gases trapping more solar heat at the Earth's surface. "Every week there's a new explanation of the hiatus," said corresponding author Ka-Kit Tung, a UW professor of applied mathematics and adjunct faculty member in atmospheric sciences. "Many of the earlier papers had necessarily focused on symptoms at the surface of the Earth, where we see many different and related phenomena. We looked at observations in the ocean to try to find the underlying cause." What they found is that a slow-moving current in the Atlantic, which carries heat between the two poles, sped up earlier this century to draw heat down almost a mile (1,500 meters). Most previous studies focused on shorter-term variability or particles that could block incoming sunlight, but they could not explain the massive amount of heat missing for more than a decade.
Earth

Scientists Baffled By Unknown Source of Ozone-Depleting Chemical 303

schwit1 writes: Scientists have found that, despite a complete ban since 2007, ozone-depleting chemicals are still being pumped into the atmosphere from some unknown source. "Carbon tetrachloride (CCl4), which was once used in applications such as dry cleaning and as a fire-extinguishing agent, was regulated in 1987 under the Montreal Protocol along with other chlorofluorocarbons that destroy ozone and contribute to the ozone hole over Antarctica. Parties to the Montreal Protocol reported zero new CCl4 emissions between 2007-2012. However, the new research shows worldwide emissions of CCl4 average 39 kilotons (about 43,000 U.S. tons) per year, approximately 30 percent of peak emissions prior to the international treaty going into effect. "We are not supposed to be seeing this at all," said Qing Liang, an atmospheric scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland, and lead author of the study published online in the Aug. 18 issue of Geophysical Research Letters, a journal of the American Geophysical Union. "It is now apparent there are either unidentified industrial leakages, large emissions from contaminated sites, or unknown CCl4 sources."

Comment Re:So no engineers? Scientists? Designers? (Score 1) 186

There has never been an Australian citizen in space.

Of the two Australian born persons who have been in space. One of them took American citizenship in order to join NASA's astronaut program, the other already was an American Naval Officer when he joined NASA.

The only British Citizen that has been to space went up with the Soviet space program.

To my knowledge, the NASA human spaceflight program was for Americans only since its inception.

Comment Re:In London, Lyft/Uber are intelligence tests. (Score 1) 125

The other options to the Falcon 9 are the Atlas 5 and Delta IV, they are now sold as complete vehicles by United Launch Alliance (a consortium of the two) and were before 2006 sold as complete vehicles by Lockheed and Boeing respectively. Or one could use an Ariane 5 (Airbus) or Proton (Khrunichev), also complete vehicles.

NASA's policy of farming out to different contractors was only ever done for their megaprojects like Saturn rockets and the Space Shuttle and this was only because they were also designed to drive research and provide economic stimulation (or pork as one may cynically call it) rather than be practical solutions to mundane problems like Falcon 9 (as well as those other Rockets I mentioned) is designed to be.

If NASA, for the first time in its history chooses the Falcon as their man rated rocket of choice, this is because they have absolutely no other candidates. If Boeing wants to, they can choose a supplier of a capsule (RSC Enegia, SpaceX and others) and create a man rated Delta rocket to provide another option to NASA. At any rate NASA and Congress would do better at picking ready made vehicles to buy than they did in organising the Orion project.

Comment Re:In London, Lyft/Uber are intelligence tests. (Score 2) 125

Really good post.

Until you got to the Beeching Axe and you started sounding like a nostalgic train anorak.

Then you got to Boeing and SpaceX of all topics and it just went worse from there on.

The Beeching Axe almost got British Rail back to profitability. SpaceX is just a competitor for Boeing Defense, Space & Security, which Boeing damn well needs, after acquiring all of its previous competitors like Rocketdyne, McDonnell Douglas and Hughes.

Comment Re:Biggest troll on Slashdot ever (Score 1) 195

As a programmer, project manager and substantial shareholder in my own company, I'm always grateful when people point out things I do that could be done better.

If I was just the former and not the latter two, I think the relative importance of my ego and the quality of the product would be shifted somewhat.

Most, Open Source programmers tend to value recognition pretty highly relative to absolute merit of the product. To your average guy, if you say "your project sucks, we'll pay you to fix it" means that you will get the credit when it is fixed. If you say "your project is good but it could be better" means you will give them the credit either way.

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