Domain: science20.com
Stories and comments across the archive that link to science20.com.
Stories · 7
-
Engineers Plan The Most Expensive Object Ever Built (bbc.com)
HughPickens.com writes: Ed Davey has an interesting story at BBC about the proposed nuclear plant at Hinkley Point in Somerset, UK which at $35 billion will be the most expensive object ever put together on Earth. For that sum you could build a small forest of Burj Khalifas -- the world's tallest building, in Dubai, which each cost $1.5 billion. You could build almost six Large Hadron Colliders, built under the border between France and Switzerland to unlock the secrets of the universe, and at a cost a mere $5.8 billion. Or you could build five Oakland Bay Bridges in San Francisco, designed to withstand the strongest earthquake seismologists would expect within the next 1,500 years at a cost of $6.5 billion...
But what about historical buildings like the the pyramids. Although working out the cost of something built more than 4,500 years ago presents numerous challenges, in 2012 the Turner Construction Company estimated it could build the Great Pyramid of Giza for $5 billion. That includes about $730 million for stone and $58 million for 12 cranes. Labor is a minor cost as it is projected that a mere staff of 600 would be necessary. In contrast, it took 20,000 people to build the original pyramid with a total of 77.6 million days' labor. Using the current Egyptian minimum wage of $5.73 a day, that gives a labor cost of $445 million. But whatever the most expensive object on Earth is, up in the sky is something that eclipses all of these things. The International Space Station. Price tag: $110 billion. -
High School Students Discover Pulsar With Widest-Known Orbit
Science 2.0 reports that A team of high school students analyzed data from the National Science Foundation's (NSF) Robert C. Byrd Green Bank Telescope (GBT) and discovered a never-before-seen pulsar which has the widest orbit of any around a neutron star - one among only a handful of double neutron star systems. ... This pulsar, which received the official designation PSR J1930-1852, was discovered in 2012 by Cecilia McGough, who was a student at Strasburg High School in Virginia at the time, and De'Shang Ray, who was a student at Paul Laurence Dunbar High School in Baltimore, Maryland. These students were participating in a summer Pulsar Search Collaboratory (PSC) workshop, which is an NSF-funded educational outreach program that involves interested high school students in analyzing pulsar survey data collected by the GBT. Students often spend weeks and months poring over data plots, searching for the unique signature that identifies a pulsar. Those who identify strong pulsar candidates are invited to Green Bank to work with astronomers to confirm their discovery. -
ATLAS Results: One Higgs Or Two?
TaeKwonDood writes with news from CERN about more results in the search for the Higgs Boson, this time from the ATLAS experiment. Researchers report peaks in the data in accordance with what they'd expect from the Higgs. The curiosity is that the peaks are a couple GeV away from each other. "The ATLAS analyses in these channels return the best fit Higgs masses that differ by more than 3 GeV: 123.5 GeV for ZZ and 126.6 GeV for gamma-gamma, which is much more than the estimated resolution of about 1 GeV. The tension between these 2 results is estimated to be 2.7sigma. Apparently, ATLAS used this last month to search for the systematic errors that might be responsible for the discrepancy but, having found nothing, they decided to go public." Scientific American has a more layman-friendly explanation available. As this work undergoes review, physicists hope more eyes and more data will shed some light on this incongruity. Tommaso Dorigo, a particle physicist working at the CMS experiment at CERN, writes, "Another idea is that the gamma-gamma signal contains some unexpected background which somehow shifts the best-fit mass to higher values, also contributing to the anomalously high signal rate. However, this also does not hold much water — if you look at the various mass histograms produced by ATLAS (there is a bunch here) you do not see anything striking as suspicious in the background distributions. Then there is the possibility of a statistical fluctuation. I think this is the most likely explanation." Matt Strassler provides a broader update to the work proceeding on nailing down the Higgs boson. -
Why Were So Many "Crazy" Higgs Boson Stories Published?
The presumed discovery of the Higgs boson may be one of the most important scientific discoveries ever, but it did bring out quite a bit of "strange" science reporting. In addition to blogs, many mainstream news sites jumped on the crazy headline bandwagon. The ability to soon travel at the speed of light, the building of a Star Trek style transporter, and many stories of the particle proving God doesn't exist have made the rounds in the past week. Is the particle's discovery just on the fringe of common scientific knowledge and therefore prone to wild speculation, or does this all come down to having the most sensational headline? -
Scientist Who Oversaw OPERA's Faster-Than-Light Neutrino Study Resigns
New submitter Big Hairy Ian writes with this news from the BBC: "The head of an experiment that appeared to show subatomic particles traveling faster than the speed of light has resigned from his post. Prof Antonio Ereditato oversaw results that appeared to challenge Einstein's theory that nothing could travel faster than the speed of light. Reports said some members of his group, called OPERA, had wanted him to resign. Earlier in March, a repeat experiment found that the particles, known as neutrinos, did not exceed light speed." -
Higgs Signal Gains Strength
ananyo writes "Today the two main experiments at the Large Hadron Collider, the world's most powerful particle accelerator, submitted the results of their latest analyses. The new papers (here here and here) boost the case for December's announcement of a possible Higgs signal. Physicists working on the In the case of the Compact Muon Solenoid experiment, have been able to look at another possible kind of Higgs decay, and that allows them to boost their Higgs signal from 2.5 sigma to 3.1 sigma. Taken together with data from the other detector, ATLAS, Higgs' overall signal now unofficially stands at about 4.3 sigma." -
Finally, an Ad Campaign Aimed At Monkeys
TaeKwonDood writes "Does sex sell for monkeys the way it does humans? Apparently so. And researchers are now hoping sexy billboards can cause monkeys to prefer a flavor of Jell-O they otherwise do not."