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Q&A: Harry Stern discusses historical maps, the Northwest Passage and the future of Arctic Ocean shipping

By Guest PostFebruary 3, 2017Sciencearctic archipelago, arctic ocean shipping, captain james cook, climate models, harry stern, lisburne, northwest passage, william bligh

Harry Stern, a polar scientist at the University of Washington’s Applied Physics Laboratory, has been studying the Arctic Ocean for decades, and sailed part of the Northwest Passage in 2009. Stern’s latest work uses the earliest explorers’ experiences to better understand a maritime environment that still contains many unknowns. A paper published in November in Polar Geography uses Captain James Cook’s records of sea-ice edge, more than two centuries ago, as a way to understand the changes we’re seeing now. UW Today asked him a few questions about the project. (more…)

Spiel mit dem Feuer: wie Eiszeitjäger das Landschaftsbild Europas prägten

By Guest PostFebruary 1, 2017Scienceeiszeit, eiszeitjaeger, europa, kaltzeit, mammut, mauricio anton, mirjam pfeiffer

Bereits vor 20.000 Jahren haben Jäger und Sammler möglicherweise gezielt Feuer eingesetzt und damit zur Entstehung des lichten Charakters der eiszeitlichen europäischen Landschaft beigetragen. Das legt eine kürzlich im Fachjournal “PLOS ONE” veröffentlichte Studie nahe, zu deren Autoren auch eine Senckenberg-Wissenschaftlerin gehört. Es wäre einer der frühesten Hinweise auf einen großflächigen Eingriff des Menschen in die natürliche Vegetation seiner Umgebung. Der Befund erklärt, warum Analysen von Sedimenten belegen, dass in der Eiszeit in Europa eine offene Steppenlandschaft vorherrschte, während Vegetationsmodelle ergeben, dass Teile Europas damals dichter bewaldet gewesen sein müssten. (more…)

Soja für den Rest der Welt

By Guest PostJanuary 30, 2017Scienceargentinien, eiweiss quelle, fleischersatz, lateinamerika, mikroklima, nahrung, oel, robert hafner, soja agrobusiness, sojaanbau in Salta, sojaproduzent, umwelt

Argentinien ist einer der größten Sojaproduzenten der Welt, ein großer Teil wird im Nordwesten des Landes angebaut. Die Umwelt in der Provinz Salta wurde dadurch massiv verändert, Proteste gibt es dennoch nicht. Die Bevölkerung nimmt das weitgehend hin – warum, hat der Geograph Robert Hafner erforscht. (more…)

Fighting World Hunger: Researchers Use Nuclear Methods to Study Pest Resistance in Corn Plants

By Guest PostJanuary 29, 2017Sciencecorn plants, nuclear methods, pest resistance, pet imaging, richard ferrieri, world hunger

Expertise, resources found at Mizzou allow researchers to study pest-resistance in corn that could help sustain projected 9 billion global population

COLUMBIA, Mo. – According to estimates, the current global population is more than 7.4 billion people and is growing at a rate of 88 million people per year. Developing corn varieties that are resistant to pests is vital to sustain the estimated 9 billion global population by 2050. Now, researchers at the University of Missouri, using advanced nuclear methods, have determined the mechanisms corn plants use to combat the western corn rootworm, a major pest threatening the growth of the vital food source. Scientists believe that using the knowledge gained from these cutting-edge studies could help crop breeders in developing new resistant lines of corn and make significant strides toward solving global food shortages. (more…)

Cementing a theory about the sea creatures of the Ediacara Biota

By Guest PostJanuary 28, 2017Scienceashleigh hood, derek briggs, ediacara biota, ediacara organisms, james gehling, lidya tarhan, marine fossils, sea creatures, south australia

Earth’s earliest community of complex sea creatures lived in a warm, slimy, planetary petri dish that nurtured a broad array of exotic species. Yet we likely wouldn’t know about it at all, scientists say, if not for a quirk in the chemistry of ancient oceans. (more…)

Überlebenskünstler in der Antarktis

By Guest PostJanuary 26, 2017Scienceantarktis, hans jochen schiewer, ho il yoon, hyoungseok lee, klimawandel, modellmoos, moosart, physcomitrella patens, ralf reski, sanionia uncinata, ueberlebenskuenstler

Forscher untersuchen, wie Moose in Gegenden mit unwirtlichen Bedingungen überleben können

Den Einfluss des Klimawandels auf die Pflanzenwelt in der Antarktis verstehen: Der Rektor der Universität Freiburg, Prof. Dr. Hans-Jochen Schiewer, und der Präsident des Korea Polar Research Institute KOPRI/Südkorea, Dr. Ho-Il Yoon, haben ein Kooperationsabkommen für Moosforschung unterzeichnet. (more…)

A complete waste of energy

By Guest PostJanuary 26, 2017Scienceelectronic devices, energy efficiency, laptop, massood tabib azar, nurunnahar islam mou, pradeep pai, ram, Technology, vampire appliances, waste of energy, yuying zhang

Utah engineers develop process for electronic devices that stops wasteful power leakage

According to the National Resource Defense Council, Americans waste up to $19 billion annually in electricity costs due to “vampire appliances,” always-on digital devices in the home that suck power even when they are turned off. (more…)

A window into battery life for next-gen lithium cells

By Guest PostJanuary 25, 2017Sciencebattery life, dendrites, kevin wood, lithium cells, lithium metal battery, neil dasgupta, safety

ANN ARBOR — Dendrites, whiskers of lithium that grow inside batteries and can cause fires like those in the Samsung Galaxy Note 7, are the bane of next-generation lithium batteries. (more…)

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