Author Archives: Guest Post

NASA’s Spitzer Finds First Objects Burned Furiously

By Guest PostJune 9, 2012Sciencealexander sasha kashlinsky, ancient era, big bang, cosmic fuel, cosmic infrared background, expansion, faint objects, first objects, giovanni fazio, glenn wahlgren, harvey moseley, infrared wavelengths, james webb, john mather, los angeles, massive stars, matt ashby, mysterious sources, NASA, nearby universe, new york city, pattern of light, richard arendt, sky, space telescope, spitzer space telescope, ultraviolet wavelengths, universe, voracious black holes

PASADENA, Calif. — The faint, lumpy glow given off by the very first objects in the universe may have been detected with the best precision yet, using NASA’s Spitzer Space Telescope. These faint objects might be wildly massive stars or voracious black holes. They are too far away to be seen individually, but Spitzer has captured new, convincing evidence of what appears to be the collective pattern of their infrared light.

The observations help confirm the first objects were numerous in quantity and furiously burned cosmic fuel.

“These objects would have been tremendously bright,” said Alexander “Sasha” Kashlinsky of NASA’s Goddard Space Flight Center in Greenbelt, Md., lead author of a new paper appearing in The Astrophysical Journal. “We can’t yet directly rule out mysterious sources for this light that could be coming from our nearby universe, but it is now becoming increasingly likely that we are catching a glimpse of an ancient epoch. Spitzer is laying down a roadmap for NASA’s upcoming James Webb Telescope, which will tell us exactly what and where these first objects were.” (more…)

20 Years after Rio Earth Summit: Ecologists Call for Preservation of Planet’s Remaining Biological Diversity

By Guest PostJune 9, 2012Naturebiodiversity loss, biological diversity, natural ecosystem, rio earth summit

ANN ARBOR, Mich.— Twenty years after the Earth Summit in Rio de Janeiro, 17 prominent ecologists are calling for renewed international efforts to curb the loss of biological diversity, which is compromising nature’s ability to provide goods and services essential for human well-being. (more…)

Bel Ami

By Guest PostJune 9, 2012Entertainmentbel ami, budapest, celebrity, georges duroy, hungary, Madeleine, magnolia pictures, obsession, Paris, politics and media, poverty, prostitute, robert pattinson, salons, sex is power, uma thurman, united kingdom, wealth, yahoo movies

Synopsis

Georges Duroy, travels through 1890s Paris, from cockroach ridden garrets to opulent salons, using his wits and powers of seduction to rise from poverty to wealth, from a prostitute’s embrace to passionate trysts with wealthy beauties, in a world where politics and media jostle for influence, where sex is power and celebrity an obsession. (more…)

Building Molecular ‘Cages’ to Fight Disease

By Guest PostJune 9, 2012Scienceartificial vaccines, bioinformatics, biomedical engineering, building blocks, circulation, david baker, drug, drug delivery, duilio cascio, human like proteins, lego blocks, medicine, michael sawaya, molecular biology, molecular cages, molecular structure, nanoscale materials, neil king, puzzle pieces, specialized proteins, tangles of ribbon, three-dimensional, tiny structures, todd yeates, traditional vaccine, tumor cells, ucla, university of washington, virus derived proteins, yen ting lai

UCLA-created nanoscale protein containers could aid drug, vaccine delivery

UCLA biochemists have designed specialized proteins that assemble themselves to form tiny molecular cages hundreds of times smaller than a single cell. The creation of these miniature structures may be the first step toward developing new methods of drug delivery or even designing artificial vaccines.

“This is the first decisive demonstration of an approach that can be used to combine protein molecules together to create a whole array of nanoscale materials,” said Todd Yeates, a UCLA professor of chemistry and biochemistry and a member of the UCLA–DOE Institute of Genomics and Proteomics and the California NanoSystems Institute at UCLA. (more…)

A Prime Seat to a Once-in-a-Lifetime Spectacle

By Guest PostJune 8, 2012Scienceadam block, alan strauss, astrophotographer, black void, digital slr camera, earth, east coast, England, exoplanets, expedition, filaments, Hubble Space Telescope, hydrogen alpha filter, jeremiah horrocks, liverpool, martin hamar, mount lemmon skycenter, much hoole, planet, planet venus, schulman telescope, southern arizona, sun, telescope, transit of venus, ua, venus, venus transit, village

Hosted by world-renowned astrophotographer Adam Block at the UA’s Mount Lemmon SkyCenter, a group of sky and astronomy enthusiasts watched Venus cross the sun from the highest vantage point in Southern Arizona.

On Nov. 24, 1639, in the tiny village of Much Hoole not far from Liverpool, England, a poor farmer’s son and self-taught astronomer affixed a sheet of paper in front of a makeshift telescope pointed at the sun and waited.

Thirty-five minutes before sunset, a dark, round spot appeared right next to the bright disc that was the sun’s face projected on the paper, and made Jeremiah Horrocks, only 20 years old at the time, the first known human to predict, observe and record a transit – the passage of a planet across the sun as seen from Earth.

Almost 373 years later, a group of sky enthusiasts is gathered beneath the dome of one of the University of Arizona’s observatories on Mount Lemmon just north of Tucson, Ariz. (more…)

A New Tool to Attack the Mysteries of High-Temperature Superconductivity

By Guest PostJune 8, 2012Scienceabsolute zero, advanced light source, alessandra lanzara, als, band structure, bardeen cooper schrieffer, bcs theory, beams of xrays, Berkeley, berkeley lab, bi2212, christopher smallwood, conventional superconductors, cooper pairs, dung hai lee, electric current, electric grids, electrons, energy savings, femtosecond scale pulses, high tc, high temperature, joseph orenstein, msd, quasiparticles, relaxation process, resistance, superconductivity, synchrotron light sources, through frequency, transmission, ultrafast laser arpes, university of california

Berkeley Lab researchers use an ultrafast laser to better understand high-temperature superconductors

Superconductivity, in which electric current flows without resistance, promises huge energy savings – from low-voltage electric grids with no transmission losses, superefficient motors and generators, and myriad other schemes. But such everyday applications still lie in the future, because conventional superconductivity in metals can’t do the job.

Although they play important roles in science, industry, and medicine, conventional superconductors must be maintained at temperatures a few degrees above absolute zero, which is tricky and expensive. Wider uses will depend on higher-temperature superconductors that can function well above absolute zero. Yet known high-temperature (high-Tc) superconductors are complex materials whose electronic structures, despite decades of work, are still far from clear. (more…)

Where Have All the Hummingbirds Gone?

By Guest PostJune 8, 2012Environment, Natureamy mckinney, arizona, billy barr, broad tailed hummingbirds, bumblebees, central america, crested butte, david bertelsen, david inouye, food resources, glacier lily, global warming, higher latitudes, hummingbirds, hummingbirds fly, male hummingbirds, mountain meadows, mountain summer, national science foundation, nectar, nickolas waser, North America, paul caradonna, saran twombly, united states, university of maryland

Glacier lilies and broad-tailed hummingbirds out of sync

The glacier lily as it’s called, is a tall, willowy plant that graces mountain meadows throughout western North America. It flowers early in spring, when the first bumblebees and hummingbirds appear.

Or did.

The lily, a plant that grows best on subalpine slopes, is fast becoming a hothouse flower. In Earth’s warming temperatures, its first blooms appear some 17 days earlier than they did in the 1970s, scientists David Inouye and Amy McKinney of the University of Maryland and colleagues have found. (more…)

Majority of Tablet Users Watch Video on their Device, 1 in Every 4 Viewers Pay to Watch

By Guest PostJune 8, 2012Technologyaudiences, Comscore, comscore tablens, gender composition, mark donovan, media habits, mobile phone subscribers, monetization potential, smartphone users, tv content, us tablet market, video content

comScore Previews Findings from TabLens™, its Forthcoming Syndicated Tablet Measurement Service

RESTON, VA, June 8, 2012 – comScore, Inc., a leader in measuring the digital world, today released new insights on the U.S. tablet market from comScore TabLens™, its forthcoming monthly syndicated service providing insights into tablet ownership and usage. The report found that tablets have quickly reached a critical mass in the U.S. with 1 in every 4 smartphone owners using tablets during the three-month average period ending April 2012. The study also found that tablet users were nearly three times more likely to watch video on their device compared to smartphone users, with 1 in every 10 tablet users viewing video content almost daily on their device.

“Tablets are one of the most rapidly adopted consumer technologies in history and are poised to fundamentally disrupt the way people engage with the digital world both on-the-go and perhaps most notably, in the home,” said Mark Donovan, comScore SVP of Mobile. “It’s not surprising to see that once consumers get their hands on their first tablet, they are using them for any number of media habits including TV viewing.” (more…)