Catch up on stories from the past week (and beyond) at the Slashdot story archive

 


Forgot your password?
Close
typodupeerror
×
Image

Huge Unidentified Organic Blob Floating Around Alaska Screenshot-sm 424

Posted by samzenpus from the real-reason-Palin-resigned dept.
Z80xxc! writes "The Anchorage Daily News reports that a 15 mile-long blob of unknown, 'gooey,' probably organic material is floating past communities on Alaska's North Slope. The US Coast Guard sent pollution experts to investigate, who determined that it was not an oil spill or other type of pollution, but were unable to determine what it is. A sample is currently being analyzed by experts in Anchorage, while the blob is following the current northwards."
Mars

Mars Robot May Destroy Life It Was Sent To Find 129

Posted by CmdrTaco from the oops-sorry-my-bad dept.
Hugh Pickens writes "New Scientist reports that instead of identifying chemicals that could point to life, NASA's robot explorers may have been toasting them by mistake. Even if Mars never had life, comets and asteroids that have struck the planet should have scattered at least some organic molecules over its surface but landers have failed to detect even minute quantities of organic compounds. Now scientists say they may have stumbled on something in the Martian soil that may have, in effect, been hiding the organics: a class of chemicals called perchlorates. At low temperatures, perchlorates are relatively harmless but when heated to hundreds of degrees Celsius perchlorates release a lot of oxygen, which tends to cause any nearby combustible material to burn. The Phoenix and Viking landers looked for organic molecules by heating soil samples to similarly high temperatures to evaporate them and analyse them in gas form. When Douglas Ming of NASA's Johnson Space Center in Houston, Texas, and colleagues tried heating organics and perchlorates like this on Earth, the resulting combustion left no trace of organics behind. "We haven't looked the right way," says Chris McKay of NASA's Ames Research Center. Jeffrey Bada of the University of California, San Diego, agrees that a new approach is needed. He is leading work on a new instrument called Urey which will be able to detect organic material at concentrations as low as a few parts per trillion. The good news is that, although Urey heats its samples, it does so in water, so the organics cannot burn up."

Comment From TFA (Score 1) 370

by hampton (#28067671) Attached to: Smile! Urine Candid Camera!

Acute airport-urinal observer and SnapStream CEO Rakesh Agrawal catches this unlikely warning posted in a menâ(TM)s restroom at the newish Southwest Airlines terminal at Hobby.

Somewhere in there there's a joke about "SnapStream" and taking pictures at urinals...
Space

Star Trek's Warp Drive Not Impossible 541

Posted by samzenpus from the engage dept.
Trunks writes "No doubt trying to ride the hype train that's currently going for the new Star Trek film, Space.com has a new article detailing how warp drive may not be impossible to acheive. From the article: '"The idea is that you take a chunk of space-time and move it," said Marc Millis, former head of NASA's Breakthrough Propulsion Physics Project. "The vehicle inside that bubble thinks that it's not moving at all. It's the space-time that's moving." One reason this idea seems credible is that scientists think it may already have happened. Some models suggest that space-time expanded at a rate faster than light speed during a period of rapid inflation shortly after the Big Bang. "If it could do it for the Big Bang, why not for our space drives?" Millis said.' Simple, right?"
Power

12 Small Windmills Put To the Test In Holland 510

Posted by timothy from the blow-ye-winds-in-the-morning dept.
tuna writes "A real-world test by the Dutch province of Zeeland (a very windy place) demonstrates that small windmills are a fundamentally flawed technology (PDF of tests results in Dutch, English summary). Twelve much-hyped micro wind turbines were placed in a row on an open plain. Their energy yield was measured over a period of one year (April 1, 2008 — March 31, 2009), the average wind velocity during these 12 months was 3.8 meters per second, slightly higher than average. Three windmills broke. The others recorded ridiculously low yields, in spite of the optimal conditions. It would take up to 141 small windmills to power an average American household entirely using wind energy, for a total cost of 780,000 dollars. The test results show clearly that energy return is closely tied to rotor diameter, and that the design of the windmill hardly matters."
Biotech

DNA-Radio, Tune In To Your Chromosomes 77

Posted by samzenpus from the because-we-can dept.
An anonymous reader writes "The folks behind the DNA-Rainbow project (discussed on Slashdot before) apparently have some time to play around with genome data. After creating amazing pictures from the human DNA code they are now transforming all chromosomes to audio and streaming them to the Internet. Every base is read and broadcasted instead converting it to a color. Seemingly this artistic project will last a while. After some math they found out that it will take them more than 23.5 years to air the whole human genome sequence."

Slashdot Top Deals

The system was down for backups from 5am to 10am last Saturday.

Close