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Brain Connections Break Down as We Age

By Guest PostAugust 19, 2010Health, Scienceage, age-related degeneration, brain connections, corpus callosum, functional mri, gerontology, multiple, neuroscience, parkinson, rachael seidler, two-sided motor, university of michigan

ANN ARBOR, Mich.—It’s unavoidable: breakdowns in brain connections slow down our physical response times as we age, a new study suggests.

This slower reactivity is associated with an age-related breakdown in the corpus callosum, a part of the brain that acts as a dam during one-sided motor activities to prevent unwanted connectivity, or cross-talk, between the two halves of the brain, said Rachael Seidler, associate professor in the University of Michigan School of Kinesiology and Department of Psychology, and lead study author.

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Berkeley Study Shows Ozone and Nicotine a Bad Combination for Asthma

By Guest PostAugust 17, 2010Health, Scienceasthma, asthma hazard, berkeley lab, chen-lin liu, Health, hugo destaillats, indoor environments, jared smith, kevin wilson, lara gundel, mohamad sleiman, musahid ahmed, ozone, roy kaltschmidt, secondhand tobacco, smoke, thirdhand smoke, tobacco-related disease, ultraviolet light, vuv light

Another reason for including asthma on the list of potential health risks posed by secondhand tobacco smoke, especially for non-smokers, has been uncovered. Furthermore, the practice of using ozone to remove the smell of tobacco smoke from indoor environments, including hotel rooms and the interiors of vehicles, is probably a bad idea.

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Rare Gold Coin in Israel

By Guest PostAugust 17, 2010Culture, Science2, 200-year-old coin, alexandria, andrea berlin, andrew booz, antiquities, donald ariel, egyptian ptolemies, hellenistic age, Iraq, Israel, israel museum, james r wiseman, Jerusalem, john g pedley, kelsey museum, kelsey museum of archaeology, lisa cakmak, ptolemaic egyptian queen, ptolemaic mint, seleucid empire, sharon herbert, sharon webb, tel kedesh, university of michigan, upper galilee

ANN ARBOR, Mich. — Sharon Herbert and her team were wrapping up their dig at the Tel Kedesh site in Israel, sweeping the site in the 140-degree heat, when a student showed University of Michigan doctoral instructor Lisa Cakmak what he first thought was a gold candy wrapper.

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Arctic Rocks Offer New Glimpse of Primitive Earth

By Guest PostAugust 16, 2010Sciencebaffin island, baffin island lavas, baffin island rocks, canadian arctic, carnegie institution, don francis, earth, geochemical evidence, helium-3, helium-4, mantle, matthew jackson, new window, radioactive, reservoir, richard carlson, thorium, uranium

Scientists have discovered a new window into the Earth’s violent past. Geochemical evidence from volcanic rocks collected on Baffin Island in the Canadian Arctic suggests that beneath it lies a region of the Earth’s mantle that has largely escaped the billions of years of melting and geological churning that has affected the rest of the planet. Researchers believe the discovery offers clues to the early chemical evolution of the Earth.

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For the First Time Ever, Scientists Watch an Atom’s Electrons Moving in Real Time

By Guest PostAugust 7, 20106 commentsScienceabdallah azzeer, atom, attosecond absorption spectroscopy, berkeley lab, electron motion, electrons, eleftherios goulielmakis, garching, graham fleming, krypton atom, laser light, lawrence berkeley national laboratory, max planck institute, mpq, oscillations, quantum optics, robin santra, stephen leone, zhi-heng loh

An international team of scientists led by groups from the Max Planck Institute of Quantum Optics (MPQ) in Garching, Germany, and from the U.S. Department of Energy’s Lawrence Berkeley National Laboratory and the University of California at Berkeley has used ultrashort flashes of laser light to directly observe the movement of an atom’s outer electrons for the first time.

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“Spreading out into the Space”

By ShamsAugust 7, 2010Sciencebig think, cuban missile crisis, human race, natural resources, Space, space flights, stephen hawking, survival

Scientist Stephen Hawking “sees great dangers for the human race”

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Long-sought Connection Found Between Saturn’s Aurora and Puzzling Radio Pulses

By Guest PostAugust 5, 20101 commentScienceaurora, auroral emissions, auroral pulses, radio emissions, radio pulses, radio waves, ringed planet, saturn

WASHINGTON —The ethereal ultraviolet glow, or aurora, that illuminates Saturn’s upper atmosphere near the planet’s poles is pulsing, recent observations show. What’s more, the glow waxes and wanes in conjunction with perplexing radio emissions that also emanate from the ringed planet. (more…)

Ice Core Drilling Effort Involving CU-Boulder Should Help Assess Abrupt Climate Change Risks

By Guest PostAugust 3, 20102 commentsEnvironment, Sciencebedrock, climate change, cu-boulder, dorthe dahl-jensen, eemian, eemian ice drilling project, Germany, greenland, ice cores, ice sheet, interglacial period, j p steffensen, jim white, neem, north greenland, tyler jones, vasilii petrenko

Ice Core Drilling Effort Involving CU-Boulder Should Help Assess Abrupt Climate Change Risks An international science team involving the University of Colorado at Boulder that is working on the North Greenland Eemian Ice Drilling project hit bedrock July 27 after two summers of work, drilling down more than 1.5 miles in an effort to help assess the risks of abrupt future climate change on Earth.

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