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Newly discovered ocean plume could be major source of iron

By Guest PostAugust 20, 2013Environmentabigail noble, atmospheric carbon dioxide, brazil, carbon cycle, carl lamborg, chad hammerschmidt, climate, cloud of nutrients, coffee mug, earth crust, fissure, growth of phytoplankton, gyre, helium, hydrothermal vents, iron flux, mak saito, mantle, mid atlantic ridge, mid atlantic vents, namibia, ocean plume, pacific ocean, rv knorr, seawater samples, source of iron, south atlantic ocean, tyler goepfert, uk, university of liverpool, whoi researchers

Study reveals micronutrient riches rising from the Southern Mid-Atlantic Ridge

Scientists have discovered a vast plume of iron and other micronutrients more than 1,000 km long billowing from hydrothermal vents in the South Atlantic Ocean. The finding, soon to be published in the journal Nature Geoscience, calls past estimates of iron abundances into question, and may challenge researchers’ assumptions about iron sources in the world’s seas.

“This study and other studies like it are going to force the scientific community to reevaluate how much iron is really being contributed by hydrothermal vents and to increase those estimates, and that has implications for not only iron geochemistry but a number of other disciplines as well,” says Mak Saito, a WHOI associate scientist and lead author of the study. (more…)

Untold story of Churchill’s World War II speeches

By Guest PostAugust 20, 2013Politicschurchills oratory, churchills speeches, finest hour broadcast, speech writing, wartime speeches

Popular belief is that Churchill’s wartime speeches were received enthusiastically by almost the whole British population and that they were the decisive influence on the nation’s willingness to fight on against the Nazis. (more…)

Scientists want a detailed picture of Mount St. Helens’ plumbing

By Guest PostAugust 19, 2013Environmentactive volcano, advance warning systems, cascade range, columbia river, detailed picture, earth, earth scientists, electromagnetic field, fluctuation, kenneth creager, magnetic signals, mount adams, mount rainier, mount st helens, oregon state university, plumbing, seismic monitoring, small earthquakes, southwestern washington, structures beneath surface, university of washington, volcanic magma, volcanic monitoring, volcanoe

Earth scientists are laying plans for a two-year study covering a broad area of southwestern Washington to develop a better understanding of how Mount St. Helens gets its supply of volcanic magma.

“The main goal is to understand the plumbing system of the mountain,” said Kenneth Creager, a University of Washington professor of Earth and space sciences who is leading the study. (more…)

Rückverfolgbarkeit von Fischprodukten nicht ausreichend

By Guest PostAugust 19, 2013Environmentdioxin, eier, femeg, fischmarken, followfish, frosta, gesundheitsrisiken, Greenpeace, greenpeace meeresexpertin, iglo, iris menn, meeresexpertin, pferdefleisch, qr code, rewe, rueckverfolgbarkeit von fischprodukten, speisefischen, stichproben

Fischprodukte von Iglo kann der Verbraucher am schlechtesten zurückverfolgen, die von Frosta am besten. Das ist das Ergebnis eines Greenpeace-Tests von Juni. Zehn verschiedene Fischmarken im Vergleich zeigen: Die Rückverfolgbarkeit von Speisefischen reicht noch lange nicht.

Bei dem Test untersuchte Greenpeace die Informationen, die der Käufer über den Tracking- beziehungsweise QR-Code bekommt. Iglo schnitt dabei am schlechtesten ab: Zu nur 24 Prozent erfüllte das Unternehmen die von Greenpeace geforderten Angaben über Herkunft und Verarbeitung. Bei Frosta sieht das mit 65 Prozent schon anders aus. “Iglo gibt über seinen Trackingcode nicht mehr Informationen preis, als bereits auf der Verpackung angegeben sind. Das ist aus unserer Sicht eine Verbrauchertäuschung”, sagt Iris Menn, Meeresexpertin bei Greenpeace. (more…)

MU Researchers Develop App that Could Save Cattle Lives, Farmers’ Wallets

By Guest PostAugust 19, 2013Science, Technologyandroid market, app, apple app store, database, don spiers, gps location, heat stress, humidity data, life threatening condition, save cattle lives, stress impact, temperature, temperature humidity index, thermalaid, thermalnet, thi, type, university of missouri

App also allows users to communicate with MU animal science experts

COLUMBIA, Mo. – Each year, overheated cattle cost farmers more than $1.2 billion. Now, researchers at the University of Missouri have created a smartphone application that can detect when a cow is at risk for heat stress. The app also can offer the best methods for intervention.

“Cows are like the rest of us,” said Don Spiers, professor of animal sciences at MU’s College of Agriculture, Food and Natural Resources, who led the team that developed the app. “They slow down in hot and humid weather. When stressed by too much heat, they stop eating, and thus, fail to grain weight or produce milk.” (more…)

A new look at how to evaluate teachers

By Guest PostAugust 19, 2013Educationeducation community, evaluate teachers, good teaching, teacher evaluations, teachers at work

ANN ARBOR — One of the most extensive collections of videos showing teachers at work in the classroom will be available this fall at the University of Michigan to help researchers learn more about how to evaluate good teaching and how to develop excellent teachers. (more…)

Infrared technology

By Guest PostAugust 18, 2013Scienceenergy wavelength, infrared signals, infrared spectrum, infrared technology, optoelectronics

UD-led breakthrough may advance development of mid-infrared light sources, lasers

A research group at the University of Delaware has achieved a breakthrough in the emerging field of “Group IV Semiconductor Optoelectronic Devices.” (more…)

Microbial Who-Done-It for Biofuels

By Guest PostAugust 18, 2013Scienceadvanced biofuels, biomass deconstruction, shotgun sequencing, switchgrass biomass, switchgrass feeding consortium, thermophilic microbes

New Technique Identifies Populations Within a Microbial Community Responsible for Biomass Deconstruction

One of the keys to commercialization of advanced biofuels is the development of cost-competitive ways to extract fermentable sugars from lignocellulosic biomass. The use of enzymes from thermophiles – microbes that thrive at extremely high temperatures and alkaline conditions – holds promise for achieving this. Finding the most effective of these microbial enzymes, however, has been a challenge. That challenge has now been met by a collaboration led by researchers with the U.S. Department of Energy (DOE)’s Joint BioEnergy Institute (JBEI). (more…)

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