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Saturn Moon May Have Rigid Ice Shell

By Guest PostAugust 30, 2013Sciencecassini data, cassini huygens mission, cassini spacecraft, cassini team, douglas hemingway, european space agency, francis nimmo, gravity, ice roots, ice shell, italian space agency, NASA, orange brown atmosphere, santa cruz, saturn moon, saturnian moon titan, topography data, university of california

An analysis of gravity and topography data from the Saturnian moon Titan obtained by NASA’s Cassini spacecraft suggests there could be something unexpected about the moon’s outer ice shell. The findings, published on Aug. 28 in the journal Nature, suggest that Titan’s ice shell could be rigid, and that relatively small topographic features on the surface could be associated with large ice “roots” extending into the underlying ocean.

The study was led by planetary scientists Douglas Hemingway and Francis Nimmo at the University of California, Santa Cruz, who used data from Cassini. The researchers were surprised to find a counterintuitive relationship between gravity and topography. (more…)

Schleppender Start für den Meeresschutz: UN-Treffen zur biologischen Vielfalt der Meere

By Guest PostAugust 30, 2013Environmentaustralien, biodiversity beyond areas, biologischen vielfalt, China, europaeische union, g77, Greenpeace, high seas alliance, hsa, meeresschutz, Mexico, nanna zimmermann, national jursidiction, neuseeland, rio, sofia tsenikli, un, un generealversammlung

Die erste Meereschutzkonferenz nach Rio+20 ist vorbei. Und das Schiff scheint Segel gesetzt zu haben, zwar langsam und gehemmt von eisigem Gegenwind, aber es ist in See gestochen. Zu diesem Ergebnis kommt das Bündnis „High Seas Alliance“ (HSA), an dem sich neben anderen Meeresschutzorganisationen auch Greenpeace beteiligt.

Im Zentrum der Verhandlungen stand ein neues Durchführungsabkommen im Sinne des Seerechtsübereinkommens der Vereinten Nationen (SRÜ). Dieses erhielt von vielen Staaten starke Unterstützung, darunter die G77 und China, die Europäische Union, Australien, Mexico und Neuseeland. Trotzdem verlangsamten die Blockadeversuche einer kleinen Minderheit dieses Prozess deutlich. (more…)

Circadian disruption and cancer

By Guest PostAugust 29, 2013Healthcancer, circadian disruption, environmental health sciences, molecular changes, sleep cycle, yale university, yong zhu

Yong Zhu, associate professor of environmental health sciences at the School of Public Health, investigates how the disruption in sleep cycles causes molecular changes that lead to cancer. *Source: Yale University

Self-Healing Solar Cells ‘Channel’ Natural Processes

By Guest PostAugust 29, 2013Sciencegel microfluidic cell, power of sun, silicon solar cells, solar cell, solar cell devices

To understand how solar cells heal themselves, look no further than the nearest tree leaf or the back of your hand.

The “branching” vascular channels that circulate life-sustaining nutrients throughout leaves and hands serve as the inspiration for solar cells that can restore themselves efficiently and inexpensively. (more…)

Hydraulic Fracturing Fluids Likely Harmed Threatened Kentucky Fish Species

By Guest PostAugust 29, 2013Environmentacorn fork, appalachian creek, aquatic species, blackside dace, colorful minnow, cumberland, cumberland river basin, diana papoulias, gas well, gill lesions, heavy metals, hydraulic fracturing fluids, kentucky, powell river basin, ray finned fish, toxic concentration, virginia, water quality samples, wildlife

Hydraulic fracturing fluids are believed to be the cause of the widespread death or distress of aquatic species in Kentucky’s Acorn Fork, after spilling from nearby natural gas well sites. These findings are the result of a joint study by the U.S. Geological Survey and the U.S. Fish and Wildlife Service.

The Acorn Fork, a small Appalachian creek, is habitat for the federally threatened Blackside dace, a small colorful minnow. The Acorn Fork is designated by Kentucky as an Outstanding State Resource Waters. (more…)

Muschel-Probleme ungelöst

By Guest PostAugust 28, 2013Environment, Naturehamburg, hans ulrich roesner, husum, miesmuschelbank, miesmuscheln, muschel probleme, nationalpark, naturschutzrecht, nordsee, oekosystem wattenmeer, praxis, schleswig holsteinischen wattenmeer, wwf

WWF und Schutzstation Wattenmeer zum Start der Miesmuschelsaison: bestehende Praxis der Muschelfischerei in Schleswig Holstein ist unverträglich mit dem Nationalpark

Hamburg/Husum: Zum heutigen Auftakt der Fangsaison auf Miesmuscheln im schleswig-holsteinischen Wattenmeer üben die Umweltverbände Schutzstation Wattenmeer und WWF Kritik an der Muschelfischerei. Die natürlichen Miesmuschelbestände wurden auf einen Bruchteil reduziert, doch es dürfen weiter wilde Muscheln gefangen werden. Zusätzlich errichtet man im Nationalpark bauliche Anlagen zur Saatmuschelgewinnung. (more…)

Dating violence impedes victims’ earnings

By Guest PostAugust 28, 2013Culture, General, Healthadrienne adams, angie kennedy, dating violence, depaul university, earnings, homework, interpersonal violence, journal, megan greeson, michigan state university, professor of psychology, richard tolman, victim

Dating violence in adolescence not only takes a physical and emotional toll on young women, it also leads to less education and lower earnings later in life, according to a first-of-its-kind study led by a Michigan State University researcher.

A young woman’s educational performance may be hindered by her partner’s actions, such as destroying books or homework or causing injuries that prevent her from going to school. (more…)

Wireless devices go battery-free with new communication technique

By Guest PostAugust 28, 2013Technologyaaron parks, ambient backscatter, battery free, battery free devices, communication signal, communication system, communication technique, david wetherall, existing signal, hong kong, internet, joshua smith, led light, morse code, seattle area, sensor networks, shyam gollakota, text messages, tv signal, university of washington, vamsi talla, vincent liu, wireless devices

We might be one step closer to an Internet-of-things reality.

University of Washington engineers have created a new wireless communication system that allows devices to interact with each other without relying on batteries or wires for power. (more…)

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