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Comment Re:Declination is not news (Score 4, Interesting) 192

Airplane pilots still use magnetic headings to identify runways which is gazillion times simpler than using GPS (doesn't even require power). Runways are numbered according to their orientation relative to the horizontal magnetic field (their declination). The wandering of the North pole is however inconvenient as these runway numbers must be changed accordingly every now and then.

Comment Fluid dynamics, psychoacoustics (Score 1) 398

Some fields in physics such as granular/fluid dynamics are poorly understood and there is not a lot of experimental data. Experiments can be relatively simple if the researcher is imaginative (ingredients: water, fluorescent dye, blue leds, video camera). These fields would certainly benefit from home research if done properly. You would spent some money but definitely not thousands to have a simple setup. There is also psychoacoustics. For example, I'm developing a way to calculate Head Related Transfer Functions (HRTF's) using minimal equipment (an audio card, computer and tiny microphones). It is exciting and the learning experience is great even if the whole thing turns out to be too complex/costly to pursue. I think this latter point is what makes home research worthwhile. Also bear in mind that there's a lot of money spent on research in big institutions that doesn't lead to anything fruitful. It may also happen in your home lab but then you wouldn't be worried of not finding a good postdoc position, losing tenure or not getting a grant!
Earth

Attack of the Killer Electrons 98

Hugh Pickens writes "At the peak of a magnetic storm, the number of highly energetic 'killer electrons' strong enough to damage electronics and human tissue can increase by a factor of more than ten times, posing a danger to spacecraft, satellites, and astronauts. Killer electrons can penetrate satellite shielding, so if electrical discharges take place in vital components, a satellite can be damaged or even rendered inoperable. For many years, the mechanism by which killer electrons are produced has remained poorly understood, in spite of physicists' attempts at solving this puzzle. Now the ESA reports that data shows the increase in the creation of a substantial number of killer electrons is due to a two-step process. First, the initial acceleration is due to the strong shock-related magnetic field compression. Immediately after the impact of the interplanetary shock wave, Earth's magnetic field lines began wobbling at ultra low frequencies. In turn, these ULF waves effectively accelerate the seed electrons (provided by the first step) to become killer electrons. 'These new findings help us to improve the models predicting the radiation environment in which satellites and astronauts operate. With solar activity now ramping up, we expect more of these shocks to impact our magnetosphere over the months and years to come,' says Philippe Escoubet, ESA's Cluster mission manager."
United States

Challenge To US Government Over Seized Laptops 246

angry tapir writes "The policy of random laptop searches and seizures by US government agents at border crossings is under attack again: The American Civil Liberties Union is working with the National Association of Criminal Defense Lawyers to find lawyers whose laptops or other electronic devices were searched at US points of entry and exit. The groups argue that the practice of suspicionless laptop searches violates fundamental rights of freedom of speech and protection against unreasonable seizures and searches."
Biotech

Organ Damage In Rats From Monsanto GMO Corn 766

jenningsthecat writes "A study published in December 2009 in the International Journal of Biological Sciences found that three varieties of Monsanto genetically-modified corn caused damage to the liver, kidneys, and other organs of rats. One of the corn varieties was designed to tolerate broad-spectrum herbicides, (so-called 'Roundup-ready' corn), while the other two contain bacteria-derived proteins that have insecticide properties. The study made use of Monsanto's own raw data. Quoting from the study's 'Conclusions' section: 'Our analysis highlights that the kidneys and liver as particularly important on which to focus such research as there was a clear negative impact on the function of these organs in rats consuming GM maize varieties for just 90 days.' Given the very high prevalence of corn in processed foods, this could be a real ticking time bomb. And with food manufacturers not being required by law to declare GMO content, I think I'll do my best to avoid corn altogether. Pass the puffed rice and pour me a glass of fizzy water!"

Comment Re:Science? (Score 2, Informative) 114

How the HELL did this article get filed under "science".

Venus has a significant atmosphere. Saturn has an atmosphere. Neptune... atmosphere. Jupiter... ALL atmosphere. Hey, look at that! All the planets larger than Mars have a significantly thick atmosphere.

Maybe it's as simple as their gravity is sufficient to trap gasses.

Please refile this article under "Intellectually Bankrupt" instead.

I think the question is the origin of the gases, not the mechanism that keeps them trapped.

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