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Your search has returned 29 articles:
  • Feature

    The iron record of Earth’s oxygen

    Iron is a gift from above.

    Its atoms were forged by nuclear reactions inside massive stars that exploded, seeding our galactic neighborhood with the raw materials for planets over billions of years before the solar system formed.

    Although iron is, by weight, the most abundant element in the solid Earth, most lies hidden in the planet’s core,...

    06/05/2009 - 14:11
  • Feature

    No brainer behavior

    In a somewhat different world, Consuelo M. De Moraes would be revolutionizing vampire fiction.

    Her lab at Penn State University studies predators that entangle prey in a tight embrace, pierce victims’ tissue and suck out nourishment. In the last few years, De Moraes and her colleagues have found that the predators even hunt down prey by scent.


    06/05/2009 - 14:03
  • Feature

    Think like a scientist

    Fresh-faced researchers swarm around Deborah Lucas, buzzing with enthusiasm and frustration. They have gathered to appraise terrarium-style models of a local pond ecosystem that groups of two or three have painstakingly assembled in large jars. Lucas leads a discussion that includes how to determine the causes of unanticipated die-offs of plants and animals in some jars, what hypotheses to...

    06/05/2009 - 13:56
  • Comment

    Professional Science Master's is 21st century MBA

    One hundred years ago (in 1908), a group of higher educators launched a new professional master’s degree called the MBA. Their aim: to meet the anticipated needs of 20th century business, which would be characterized, they thought, not by product specialty but by bigness. Today, MBA programs graduate about 90,000 students per year and are considered to have provided a singular advantage to...

    06/05/2009 - 13:44
  • Science Future

    Science Future for June 20, 2009

    June 26

    Attend or watch the webcast of “Iron Science Teacher” at the Exploratorium in San Francisco. Visit

    July 19–26

    Plumb the depths of cave science at the 15th International Congress of Speleology in Kerrville, Texas. Find out more at

    August 10–13

    Scientists discuss the largest U.S. waterway at...

    06/05/2009 - 11:16
  • Science Past from the issue of June 20, 1959

    Mechanical cow eats grass — A mechanical “cow” has just started work at the British Agricultural Research Council’s experimental station at Rothamsted, near London. Its function is to extract protein from leaves or grass or any suitable vegetation…. Grass or other vegetation is fed into the machine from a normal elevator. After being chopped, the grass enters a press and the juice is squeezed...

    06/05/2009 - 11:14
  • Letters to the Editor


    Tobacco for adults, cocoa for kids

    I was interested in the report of cacao-beverage use by people of Chaco Canyon in New Mexico as early as A.D. 1000 (“Hot chocolate, with foam please,” SN: 2/28/09, p. 14). In the late ’50s, I and others at the Philip Morris Research Center looked at pipe samples from the Four Corners area (Arizona, New Mexico, Colorado and Utah) dating from about A.D....

    06/05/2009 - 11:14
  • Reviews & Previews

    Book Review: Deep Brain Stimulation: A New Treatment Shows Promise in the Most Difficult Cases by Jamie Talan

    The very notion of having electrodes implanted in your brain would seem like science fiction — if 40,000 people hadn’t already undergone the operation, most for Parkinson’s disease.This book tells the story of heroic people — some on operating tables and others wielding scalpels and drills — and the lengths they’ve gone to in seeking to relieve devastating brain disorders. Talan...

    06/05/2009 - 10:44 Neuroscience
  • Reviews & Previews

    Book Review: The Bomb: A New History by Stephen M. Younger

    Nuclear policy in the United States has yet to escape the Cold War’s shadow. In this account of the atomic bomb, a former director of the Defense Threat Reduction Agency makes a case for a reanalysis of the nation’s nuclear needs. “Our nuclear weapons stockpile is optimized for a threat that no longer exists,” Younger writes.Younger offers a straightforward account of nuclear weapons: how...

    06/05/2009 - 10:41
  • Reviews & Previews

    A Mathematician’s Lament: How School Cheats Us Out of Our Most Fascinating and Imaginative Art Form by Paul Lockhart

    Prevailing math education makes the grade but misses the meaning, a teacher argues. Bellevue Literary Press, 2009, 192 p., $12.95.

    06/05/2009 - 10:40