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Space

Study Concludes "Planet" Was Just Stellar Spots 132

Kligat writes "Back in January, it was reported that the youngest planet ever to be discovered, about ten times the mass of Jupiter, was orbiting the eight- to ten-million-year-old star TW Hydrae. Now a Spanish research team has concluded that TW Hydrae b doesn't exist, and that cold spots on the star's surface actually produced the dip in brightness instead of a transiting planet. Not as cool as if a planet had actually been there, but refutations are science, too, right?"
Debian

FSF-Sponsored gNewSense 2.1 Released 413

An anonymous reader writes "gNewSense, the fully-free GNU/Linux distribution sponsored by the FSF, has released a 2.1 live CD (torrent). Since the last release, more non-free binary blobs have been removed, new artwork has been added and lots of other improvements have been made. It's also two years since the first edition of gNewSense, and in that time an impressive ten live CDs have been released! gNewSense 2.1 DeltaH is based on Ubuntu Hardy, and removes non-free software that other distributions don't." I wonder if gNewSense can be easily installed on an OLPC XO the way several other distros can.
Medicine

California Classes LED Component Gallium Arsenide a Carcinogen 495

Reader LM741N, pointing to a report released this month by California's Office of Environmental Health Hazard Assessment, writes "Gallium Arsenide has now been listed as a carcinogen. Given the increasing usage of gallium arsenide, the main constituent in LEDs, and their recent championing as more efficient light sources in recent news stories and Slashdot, there may be significant environmental concerns as related to their disposal. Morover, workers in industries using the substance may be at risk of cancer as well."
Security

Are IT Security Professionals Less Happy? 363

zentanu writes "It's said that if you want to be happy, be a gardener. What about IT security professionals? Having worked as an IT security consultant for several years, I now wonder if my job has a negative influence on my happiness, because it constantly teaches me to focus on the negative side of life: I always have to think about risks and identify all sorts of things that could go wrong. As an auditor I search for errors that others have made and haughtily tell them. As a penetration tester I break systems that system engineers and administrators have laboriously built. I assume inside threats and have to be professionally suspicious. The security mindset surely helps me in my job, but is it good for me on the long run? What kind of influence has being an IT security professional had on your general attitude towards life? What helps you stay out of pessimism and cynicism? Is protecting existing things really as good as building new ones?"
United States

NIST Releases Report On WTC 7 Collapse 1331

photonic writes "After three years of study, the National Institute of Standards and Technology (NIST) finally released its report on the collapse of World Trade Center building 7. The main conclusion is that the building came down due to fire, not due to debris damage or some conspiracy demolition team. The fire started pretty small after the collapse of WTC 1, but was left to burn several floors out completely. The important finding is that the collapse was triggered by thermal expansion of beams, which could detach asymmetrically loaded girders from the main columns. Some limited pancaking of floors then caused a lack of lateral support and buckling of a single column. This triggered the failure of the entire core of the building, which finally fell down as a single piece. Crackpot theories can be discussed elsewhere; please limit the discussion to the science here. All documents can be found at NIST's WTC page, which read like a porn magazine for finite element junkies. Simulation movies are also available. And yes, they used Beowulf clusters to do the simulations, some of which lasted for several months."

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