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Shot Away from its Companion, Giant Star Makes Waves

Like a ship plowing through still waters, the giant star Zeta Ophiuchi is speeding through space, making waves in the dust ahead. NASA’s Spitzer Space Telescope has captured a dramatic, infrared portrait of these glowing waves, also known as a bow shock.

Astronomers theorize that this star was once sitting pretty next to a companion star even heftier than itself. But when that star exploded, Zeta Ophiuchi was kicked away and sent flying. Zeta Ophiuchi, which is 20 times more massive and 80,000 times brighter than our sun, is racing along at about 54,000 mph (24 kilometers per second). (more…)

Rise in Teen Marijuana Use Stalls, Use of Synthetic Marijuana and ‘Bath Salts’ is Very Low

Culture, General

ANN ARBOR — National samples of 45,000 to 50,000 students in three grades (8, 10, and 12) have been surveyed every year since 1991 as part of the nationwide Monitoring the Future study. Among the most important findings from this year’s survey of U.S. secondary school students are the following:

Marijuana. After four straight years of increasing use among teens, annual marijuana use showed no further increase in any of the three grades surveyed in 2012. The 2012 annual prevalence rates (i.e., percent using in the prior 12 months) were 11%, 28%, and 36% for 8th, 10th, and 12th graders, respectively. (Among the 8th graders there was a modest decline across the past two years—from 13.7% in 2010 to 11.4% in 2012—that reached statistical significance.) (more…)

Emerging Consensus Shows Climate Change Already Having Major Effects on Ecosystems and Species

Environment, Nature

Plant and animal species are shifting their geographic ranges and the timing of their life events – such as flowering, laying eggs or migrating – at faster rates than researchers documented just a few years ago, according to a technical report on biodiversity and ecosystems used as scientific input for the 2013 Third National Climate Assessment.

The report, Impacts of Climate Change on Biodiversity, Ecosystems, and Ecosystem Services, synthesizes the scientific understanding of the way climate change is affecting ecosystems, ecosystem services and the diversity of species, as well as what strategies might be used by natural resource practitioners to decrease current and future risks. More than 60 federal, academic and other scientists, including the lead authors from the U.S. Geological Survey, the National Wildlife Federation and Arizona State University in Tempe, authored the assessment. (more…)

Les Miserables (2012)

Entertainment

Synopsis

Ex-prisoner Jean Valjean is hunted for decades by the ruthless policeman Javert after he breaks parole. When Valjean agrees to care for factory worker Fantine’s young daughter, Cosette, their lives change forever. (more…)

Wildlife Monitoring Cameras Click Jaguar and Ocelot Photos

Nature

Automated trail cameras set up by a UA research team have snapped pictures of a male jaguar and a male ocelot roaming the rugged Southern Arizona landscape

An adult male jaguar and an adult male ocelot have been photographed in two separate Southern Arizona mountain ranges by automated wildlife monitoring cameras. The images were collected as part of the Jaguar Survey and Monitoring Project led by the University of Arizona. Both animals appear to be in good health. (more…)

Commentary: Lyle Goldstein: Sunshine Returns to the Korean Peninsula?

Politics

On Wednesday, Dec. 19, 2012, Park Geun-hye was elected South Korea’s new president, making her the first woman to hold the title. It’s a victory some say signals the beginning of a new era for the tension-riddled region. Lyle Goldstein, International Relations program visiting faculty and associate professor in the China Maritime Studies Institute of the U.S. Naval War College, comments on what Park’s election means for the future of South Korea and the country’s relationship with the United States and China.

Park Geun-hye’s election will come as a major relief to many strategists in Washington, given her pro-American credentials. Her opponent was inclined to fully reinstate the “sunshine policy” of a decade ago, a disposition that would have no doubt entailed a more discriminating look at the newly invigorated U.S.-Republic of Korea alliance. Irrespective of which candidate came to occupy the Blue House, South Koreans seemed to be looking for more sunshine and less inter-Korean tension. (more…)

UCLA Engineers Develop New Energy-Efficient Computer Memory Using Magnetic Materials

Technology

MeRAM is up to 1,000 times more energy-efficient than current technologies

By using electric voltage instead of a flowing electric current, researchers from UCLA’s Henry Samueli School of Engineering and Applied Science have made major improvements to an ultra-fast, high-capacity class of computer memory known as magnetoresistive random access memory, or MRAM. (more…)

Researchers Use Liquid Metal to Create Wires That Stretch Eight Times Their Original Length

Science

Researchers from North Carolina State University have created conductive wires that can be stretched up to eight times their original length while still functioning. The wires can be used for everything from headphones to phone chargers, and hold potential for use in electronic textiles. (more…)