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The Shocking Behavior of a Speedy Star

By Guest PostFebruary 23, 2014Scienceastronomers, cassiopeia constellation, hd 2905, infrared light, kappa cassiopeiae, milky way galaxy, NASA, proxima centauri, shocking behavior, speedster star, speedy star, spitzer space telescope

Roguish runaway stars can have a big impact on their surroundings as they plunge through the Milky Way galaxy. Their high-speed encounters shock the galaxy, creating arcs, as seen in this newly released image from NASA’s Spitzer Space Telescope.

In this case, the speedster star is known as Kappa Cassiopeiae, or HD 2905 to astronomers. It is a massive, hot supergiant moving at around 2.5 million mph relative to its neighbors (1,100 kilometers per second). But what really makes the star stand out in this image is the surrounding, streaky red glow of material in its path. Such structures are called bow shocks, and they can often be seen in front of the fastest, most massive stars in the galaxy. (more…)

Todesstoß für Delphine

By Guest PostFebruary 23, 2014Natureart orcaella, bau, don sahong projekt, don sahong staudamm, flussdelfin, flussdelphine, flusssystem, gerry ryan, irawadi delphin, iucn, jian hua meng, laos, mekong, umwelt, wwf

WWF-Report: Staudamm-Projekt bedroht die letzten 80 Mekong-Delphine.

Laut der Naturschutzorganisation WWF bedroht der Bau des Don Sahong Staudamms in Laos die letzten etwa 80 Flussdelphine im Mekong. In einem am Donnerstag veröffentlicht Report kritisiert der WWF den für die kommenden Monate angekündigten Baubeginn und warnt vor gravierenden Umweltauswirkungen. Das Hauptverbreitungsgebiet der Delphine liegt nur einen Flusskilometer unterhalb des geplanten Staudammes. (more…)

Die Utopie ist tot – lang lebe die Utopie!

By Guest PostFebruary 23, 2014Politicsbig data, cyberpunks, die utopie, eu in gefahr, Facebook, faz, florian schmitt, Google, guenter hack, internet der dinge, katharina grosse, leena simon, martin schulz, matthias zimmer, netzneutralitaet, philosophin, politik digital, science fiction, tot, universitaet oxford, viktor mayer schoenberger, zerbrochene kultur

Was in älterern filmischen und literarischen Darstellungen als Dystopie erschien, ist zum Teil heute Realität. Günter Hack diagnostiziert in der FAZ das Ende der Utopien. Doch vielleicht hat gerade das Internet das Potential, sich selbst neu zu erschaffen und neue Utopien zu entwickeln. Das Neue – es ist heute dringend erforderlich! Und das nicht nur in utopischer Form, sondern auch in Form neuerer rechtlicher Rahmenbedingungen für den Datenschutz, aber auch in Form einer Änderung unserer Gewohnheiten. Da hilft es auch nichts, dass die Perspektive außerhalb der westlichen Hemisphäre ganz anders aussieht, wie uns Leena Simon von ihrer Reise aus Indien berichtet. Manchmal muss mit Traditionen auch gebrochen werden, um ein neues Leben zu ermöglichen.

Video der Woche (more…)

Killing Whales by Design and Default

By Guest PostFebruary 23, 2014NatureCCS, commercial fishing gear, commercial whaling, dolphins, harpoon technology, Iceland, ifaw, Japan, katie moore, killing whales, marine biologist, marine mammal center, michael moore, noaa, north atlantic, norway, porpoises, right whales, robert rocha, sharon young, whoi

While countries such as Japan, Norway, and Iceland often are criticized for their commercial whaling practices, Woods Hole Oceanographic Institution (WHOI) marine biologist Michael Moore points out how the majority of nations are also complicit in killing whales by deploying commercial fishing gear.

Moore cites scientific literature, necropsy reports, and individual case studies in an editorial essay addressing the ethics of whale entanglement and commercial whaling published in ICES Journal of Marine Science. (more…)

Wie Unternehmen Wikipedia manipulieren

By Guest PostFebruary 23, 2014Media, Politicsard magazin, infosperber, lufthansa, manipulieren, monitor, natalie perren, online enzyklopaedie, unternehmen, us armee, Wikipedia

PR-Agenturen manipulieren Texte auf Wikipedia im Auftrag von Unternehmen. Die perfide Unterwanderung ist kaum zu kontrollieren.

Die Online-Enzyklopädie Wikipedia ist eines der weltweit meistgeklickten Informationsportale im Netz. Weit über anderthalb Millionen Artikel zu kulturellen, historischen und wissenschaftlichen Themen finden sich allein auf der deutschen Wikipedia-Seite. Verfasst werden diese Einträge von freiwilligen Autoren, die dafür kein Geld bekommen. Das Prinzip des Online-Lexikons: Jeder kann Beiträge einstellen, kontrollieren, verbessern – auch anonym. Durch die Intelligenz der Masse soll ein gewaltiger Wissensspeicher entstehen, glaubwürdig und neutral. (more…)

Survey: Americans struggle with science; respect scientists

By Guest PostFebruary 23, 2014General, Scienceamericans, earth, john besley, michigan state university, respect scientists, Science, struggle, survey, technology museum, united states

While most Americans could be a bit more knowledgeable in the ways of science, a majority are interested in hearing about the latest scientific breakthroughs and think highly of scientists.

This is according to a survey of more than 2,200 people conducted by the National Science Foundation, one that is conducted every two years and is part of a report – Science and Engineering Indicators – that the National Science Board provides to the president and Congress. (more…)

Research in the news: The rise of oxygen on Earth

By Guest PostFebruary 22, 2014Sciencebiological innovation, earth, ecosystem change, eric gershon, great oxygenation event, noah planavsky, rise of oxygen, timothy lyons

Yale’s Noah J. Planavsky and collaborators have published a Nature review article titled “The rise of oxygen in Earth’s early ocean and atmosphere.”

Published online Feb. 19, the review surveys and assesses research about the emergence of significant oxygen concentrations and suggests that this happened hundreds of millions of years before the “great oxygenation event” of 2.3 billion years ago. In between, oxygen levels appear to have fluctuated considerably, according to the authors. (more…)

MU Research of Zebrafish Neurons May Lead to Better Understanding of Birth Defects like Spina Bifida

By Guest PostFebruary 22, 2014Scienceanand chandrasekhar, basic function, birth defects, cilia function, facial branchiomotor, gene, internal process, jaw muscles, mammal, mu research, neuron migration, protein vangl2, spina bifida, vertebrate, zebrafish neurons

COLUMBIA, Mo. – The zebrafish, a tropical freshwater fish similar to a minnow and native to the southeastern Himalayan region, is well established as a key tool for researchers studying human diseases, including brain disorders. Using zebrafish, scientists can determine how individual neurons develop, mature and support basic functions like breathing, swallowing and jaw movement. Researchers at the University of Missouri say that learning about neuronal development and maturation in zebrafish could lead to a better understanding of birth defects such as spina bifida in humans.

“We are studying how neurons move to their final destinations,” said Anand Chandrasekhar, professor of biological sciences and a researcher in the Bond Life Sciences Center at MU. “It’s especially critical in the nervous system because these neurons are generating circuits similar to what you might see in computers. If those circuits don’t form properly, and if different types of neurons don’t end up in the right locations, the behavior and survival of the animal will be compromised.” (more…)

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