Author Archives: Guest Post

How high-speed internet is bringing people ‘out of the dark ages’ to reshape work and life in rural America

As Beth Carlson prepared to take her son to a hospital eight hours away for surgery on a benign brain tumor last winter, one major worry aside from the procedure weighed on her mind.

How would the family stay in touch with Xander, 13, while he was away for weeks of treatment afterward? They’d tried video chats during a previous hospital stay, but the internet connection on the farm where they live was too slow. They could talk by phone, but it wasn’t the same as being able to see her boy’s face and look for the signs a mother knows to tell if he was OK. Xander’s two sisters, one older and one younger, were also worried about him. (more…)

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Study shows how serotonin and a popular anti-depressant affect the gut’s microbiota

A new study in mice led by UCLA biologists strongly suggests that serotonin and drugs that target serotonin, such as anti-depressants, can have a major effect on the gut’s microbiota — the 100 trillion or so bacteria and other microbes that live in the human body’s intestines. (more…)

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Control Theory: Mother Nature is an Engineer

Engineering principles developed only 150 years ago were found to have evolved first in biological circuitry that controls cell growth, according to new UA research.

In the last 150 years, engineers have developed and mastered ways to stabilize dynamic systems, without lag or overshoot, using what’s known as control theory. Now, a team of University of Arizona researchers has shown that cells and organisms evolved complex biochemical circuits that follow the principles of control theory, millions of years before the first engineer put pencil to paper. (more…)

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Indoeuropäische Sprachen stammen aus der Steppe

Bevölkerungsgeschichte Süd- und Zentralasiens der letzten Jahrtausende in neuem Licht

Die größte jemals durchgeführte Studie alter menschlicher DNA wirft ein neues Licht auf die Herkunft von zentral- und südasiatischen Bevölkerungen. Im Fokus der Studie, an der Ron Pinhasi vom Department für Evolutionäre Anthropologie der Universität Wien als Haupt-Senior-Autor beteiligt waren, steht der Ursprung der Landwirtschaft und der indogermanischen Sprachen. Die Ergebnisse erscheinen aktuell in der Zeitschrift “Science”.

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Potenzielle Folgen von Dürre frühzeitig erkennen

Forschende entwickeln Prognosesystem und fordern politische Agenda zu diesem Thema

Die extremen Dürren der zurückliegenden Jahre in weiten Gebieten Europas haben gezeigt, dass saisonale Prognosen zu Trockenphasen erforderlich sind. Denn nur dann können rechtzeitig Maßnahmen ergriffen werden, um die negativen Folgen für Ökosysteme, Binnenschifffahrt, Landwirtschaft und Stromerzeugung zu verringern. (more…)

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