While astronomers now know that exoplanets are exceedingly common in the galaxy, the mechanics by which they are formed aren’t well understood. Planetary childhood remains a mystery.
Young stars start out with a massive disk of gas and dust that over time, astronomers think, either diffuses away or coalesces into planets and asteroids.
“The speculation is that as planets form they clear out a region of gas and dust around them, forming a telltale ‘gap’ in the disk”, said Stefan Kraus, from Physics and Astronomy at the University of Exeter. (more…)
Blockbuster titles, Steven Spielberg-produced Halo TV series, and exclusive agreements with the NFL transform games, TV and entertainment for the 21st century living room.
REDMOND, Wash. — May 21, 2013 — A new vision for the future comes to life today as Microsoft Corp. unveils Xbox One , the all-in-one gaming and entertainment system created for today and the next generation. At Microsoft headquarters in Redmond, Wash., the company showcased how Xbox One puts you at the center of all your games, TV, movies, music, sports and Skype.
“Xbox One is designed to deliver a whole new generation of blockbuster games, television and entertainment in a powerful, all-in-one device,” said Don Mattrick, president, Interactive Entertainment Business at Microsoft. “Our unique, modern architecture brings simplicity to the living room and, for the first time ever, the ability to instantly switch across your games and entertainment.” (more…)
Hydrogen sulfide, the pungent stuff often referred to as sewer gas, is a deadly substance implicated in several mass extinctions, including one at the end of the Permian period 251 million years ago that wiped out more than three-quarters of all species on Earth.
But in low doses, hydrogen sulfide could greatly enhance plant growth, leading to a sharp increase in global food supplies and plentiful stock for biofuel production, new University of Washington research shows. (more…)
Berkeley Lab Researchers Develop New Metrics for X-ray and Neutron Analysis of Flexible Macromolecules
A dramatic leap forward in the ability of scientists to study the structural states of macromolecules such as proteins and nanoparticles in solution has been achieved by a pair of researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab). The researchers have developed a new set of metrics for analyzing data acquired via small angle scattering (SAS) experiments with X-rays (SAXS) or neutrons (SANS). Among other advantages, this will reduce the time required to collect data by up to 20 times.
“SAS is the only technique that provides a complete snapshot of the thermodynamic state of macromolecules in a single image,” says Robert Rambo, a scientist with Berkeley Lab’s Physical Biosciences Division, who developed the new SAS metrics along with John Tainer of Berkeley Lab’s Life Sciences Division and the Scripps Research Institute. (more…)
Taking before and after pictures of Martian terrain, researchers of the UA-led HiRISE imaging experiment have identified almost 250 fresh impact craters on the Red Planet. The results suggest Mars gets pummeled by space rocks less frequently than previously thought, as scientists relied on cratering rates of the moon for their estimates.
Scientists using images from NASA’s Mars Reconnaissance Orbiter, or MRO, have estimated that the planet is bombarded by more than 200 small asteroids or bits of comets per year forming craters at least 12.8 feet (3.9 meters) across.
Researchers have identified 248 new impact sites on parts of the Martian surface in the past decade, using images from the spacecraft to determine when the craters appeared. The 200-per-year planetwide estimate is a calculation based on the number found in a systematic survey of a portion of the planet. (more…)
In this TEDx talk, Dr. Judson Brewer, an addiction psychiatrist and neuroscientist at Yale University, outlines several common ways that we get in our own way, and details how his clinical research has found that techniques to help us get out of our own way, such as mindfulness training, can have large effects. *Source: Yale […]
SUNNYVALE, Calif. & NEW YORK — Yahoo! Inc. and Tumblr announced today that they have reached a definitive agreement for Yahoo! to acquire Tumblr.
Per the agreement and our promise not to screw it up, Tumblr will be independently operated as a separate business. David Karp will remain CEO. The product, service and brand will continue to be defined and developed separately with the same Tumblr irreverence, wit, and commitment to empower creators. (more…)
In a promising development for diabetes treatment, researchers have developed a network of nanoscale particles that can be injected into the body and release insulin when blood-sugar levels rise, maintaining normal blood sugar levels for more than a week in animal-based laboratory tests. The work was done by researchers at North Carolina State University, the University of North Carolina at Chapel Hill, the Massachusetts Institute of Technology and Children’s Hospital Boston.
“We’ve created a ‘smart’ system that is injected into the body and responds to changes in blood sugar by releasing insulin, effectively controlling blood-sugar levels,” says Dr. Zhen Gu, lead author of a paper describing the work and an assistant professor in the joint biomedical engineering program at NC State and UNC Chapel Hill. “We’ve tested the technology in mice, and one injection was able to maintain blood sugar levels in the normal range for up to 10 days.” (more…)
