ananyo writes: Individual neurons in birds' brains can relay crucial information about Earth’s magnetic field, possibly providing the animals with an ‘internal GPS’. Pigeons’ remarkable navigational feats have long been pegged to the birds’ ability to sense magnetic fields, but pinning down how they do so has frustrated scientists for years. Work published in Science (abstract) shows that individual cells seem to encode information on a magnetic field’s direction, intensity and polarity. The work also suggests that these signals come from a part of the inner ear called the lagena, further complicating matters for researchers in the field. The Science paper comes just days after a report in Nature (abstract) revealed that cells in pigeons' upper beaks, previously thought to be magnetoreceptors, are actually immune cells called macrophages.
gambit3 writes: Scientists say the notoriously dry continent of Africa is sitting on a vast reservoir of groundwater. They argue that the total volume of water in aquifers underground is 100 times the amount found on the surface. Across Africa more than 300 million people are said not to have access to safe drinking water. Freshwater rivers and lakes are subject to seasonal floods and droughts that can limit their availability for people and for agriculture. At present only 5% of arable land is irrigated.
mspohr writes: From DemocracyNow! National Security Agency whistleblower William Binney reveals he believes domestic surveillance has become more expansive under President Obama than President George W. Bush. He estimates the NSA has assembled 20 trillion "transactions" — phone calls, emails and other forms of data — from Americans. This likely includes copies of almost all of the emails sent and received from most people living in the United States. Binney talks about Section 215 of the USA PATRIOT Act and challenges NSA Director Keith Alexander’s assertion that the NSA is not intercepting information about U.S. citizens. http://www.democracynow.org/2012/4/20/whistleblower_the_nsa_is_lying_us
No, you are watching another human perform something. That is what is interesting, and while watching you could think to yourself, how would it feel if I was doing that...? With a machine you can't do that - because a machine does things differently then you.
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CmdrTaco
from the react-to-the-reactor dept.
Al writes "NASA recently finished testing a miniature nuclear reactor that would provide power for an astronaut base on the Moon or Mars. The reactor combines a small fission system with a Stirling engine to make a 'safe, reliable, and efficient' way to produce electricity. The system being tested at NASA's Glenn Research Center can produce 2.3 kilowatts and could be ready for launch by 2020, NASA officials say. The reactor ought to provide much more power than solar panels but could prove controversial with the public concerned about launching a nuclear power source and placing it on the Moon or another planet."
An anonymous reader writes with news that Unreal Tournament 3 will be getting a free expansion called Titan Pack on March 5th. It will contain a variety of new maps, and two new game modes: Greed and Betrayal. There will also be new weapons, deployables, and achievements. IGN's preview of the expansion mentions a few more improvements, such as an improved voting system and client-side demo recording for the PC version. Quoting: "... the most obvious addition to the series is the new Titan. As you play through the game, killing enemies, completing goals and generally avoiding damage, you'll build up your Titan meter. Once it fills up, you can instantly mutate into a 15' tall Titan. The Titan has massive health, a decent shield belt and can fire homing rockets. Oh, and he can also pound the ground to knock back any enemies that get too close. In short, the Titan is a real game changer."
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timothy
from the well-hey-nothin's-perfect dept.
nk497 writes "Hackers at the Black Hat conference have shown that SSL encryption isn't as secure as online businesses would like us to think. Independent hacker Moxie Marlinspike showed off several techniques to fool the tech behind the little padlock on your screen. He claimed that by using a real world attack on several secure websites such as PayPal, Gmail, Ticketmaster and Facebook, he garnered 117 email accounts, 16 credit card numbers, seven PayPal logins and 300 other miscellaneous secure logins."
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kdawson
from the outnumbered-by-your-gut dept.
Shipud writes "There are ten times more bacterial cells in our body than our own cells. Most of them are located in our guts, and they affect our well-being in many ways. A group at Washington University has recently reported that although our gut microbes perform similar functions, it appears that different people have completely different compositions of gut bacteria: every man is an island, a unique microbial ecosystem composed of completely different species. One conclusion is that the whole division of bacteria into species may well be over-used in biomedicine."
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timothy
from the fill-up-on-windshield-fluid-please dept.
ChazeFroy writes "The first flying automobile, equally at home in the sky or on the road, is scheduled to take to the air next month. If it survives its first test flight, the Terrafugia Transition, which can transform itself from a two-seater road car to a plane in 15 seconds, is expected to land in showrooms in about 18 months' time. Terrafugia claims it will be able to fly up to 500 miles on a single tank of unleaded petrol at a cruising speed of 115mph. Even at $200,000 per automobile, they have already received 40 orders."
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kdawson
from the keeping-it-simple dept.
An anonymous reader writes "I would like to know if there are any resources on the Web or elsewhere describing how to configure a Windows PC for an older parent not living in the same household. Assume little computer familiarity or aptitude. Some stuff is obvious, like using only a few large icons for favorite Web sites, or an icon perhaps for composing email and another for checking email. Other considerations are eliminating nuisance messages from Windows update and antivirus/firewall. What works and what doesn't? Can anyone who has worked/volunteered at a senior center offer some insights?"
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CmdrTaco
from the on-a-mountain-of-money dept.
ThousandStars writes "The Wall Street Journal asks How Apple Could Survive Without Steve Jobs: 'Speculation about the continued reign of Mr. Jobs — which has popped up from time to time since his 2004 treatment for cancer — underscore how closely Apple's fashion-setting products are identified with its co-founder.'"
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timothy
from the here's-my-number-if-the-place-burns-down dept.
It appears that the exploit in IE briefly mentioned a few days ago is causing a serious reaction: SteveAU writes "Microsoft has begun flooding media outlets with information advising users to switch to an alternate browser while a serious security flaw is being patched. The flaw, which affects all versions of Microsoft Internet Explorer, is manifested via malware and has infected over 6,000 sites thus far. Microsoft states: 'The vulnerability exists as an invalid pointer reference in the data-binding function of Internet Explorer. When data binding is enabled (which is the default state), it is possible under certain conditions for an object to be released without updating the array length, leaving the potential to access the deleted object's memory space. This can cause Internet Explorer to exit unexpectedly, in a state that is exploitable.'" According to the BBC report, though, Microsoft itself is only asking that users be "vigilant while it investigated and prepared an emergency patch"; it's outside experts who say to dump IE (at least for now).