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Future Renewable Electric Energy Delivery and Management Systems

Alex Huang, professor of electrical engineering and director of the FREEDM Systems Center at North Carolina State University, talks about research on new electric grid technologies that could better utilize renewable energy sources, and the role of plug-in hybrid cars in such a grid system. (November 24, 2009)

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The Evolution of the Human Capacity for Killing at a Distance

Duke University anthropologist Steven Churchill presents his research on the evolutionary origins of projectile weaponry, and how weapon use changed interactions between humans and other species—including, perhaps, the Neandertals. (October 20, 2009)

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From Cloning to Stem Cells: How Can Pigs Help Us Solve Problems in Human Medicine?

Jorge Piedrahita, professor of genomics at North Carolina State University College of Veterinary Medicine, describes his research with cloned swine and how their abnormal growth provides insight into human placental defects, the ways transgenic pigs may help grow human tissue and how pigs could help advance stem cell therapies. (March 25, 2009)

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Everything Is Dangerous: A Controversy

S. Stanley Young, director of bioinformatics at the National Institute of Statistical Sciences, critiques statistical analysis by some epidemiologists, especially their multiple testing of data sets obtained from observational studies. (April 22, 2009)

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Our Energy Future: Science and Technology Challenges for the 21st Century

Chemist Thomas Meyer, director of the Solar Energy Research Center at the University of North Carolina, Chapel Hill, discusses the status of the world’s energy supply. In particular, he presents the idea that the sun’s energy could be used to make fuels from water and carbon dioxide for heating, transportation and energy storage. (September 24, 2009)

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Total Records : 35


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VIDEO: How Hair Ice Grows

In 2013, American Scientist featured an article on odd ice formations on plant stems, including these curling ribbons of ice. One of the types of ice discussed in the article was hair ice—long, thin strands of ice that grow under quite specific conditions. The only problem is that a new study shows the theory put forth at the time—that gas pressure pushes the water out—isn’t correct... (click the link above to read more).

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