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January

  • Leaders at Agreement Signing

    'Dream Teams' of Pediatric Problem-Solvers Could Emerge From Drexel-CHOP-Hebrew University gathering

    January 17, 2014

    When researchers from Drexel, The Children's Hospital of Philadelphia and Hebrew University of Jerusalem come together next week, leaders hope the result will be new research "dream teams" that can tackle pediatric problems in new ways.

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  • Fossil Find Shows Fish Hips Grew Strong Before Life's First Steps

    January 13, 2014

    The discovery of new fossil materials from the ancient fish species Tiktaalik roseae has revealed a key link in the evolution of hind limbs. The newly described, well-preserved pelves and partial pelvic fin from this 375 million-year-old transitional species between fish and the first legged animals, reveals that the evolution of hind legs actually began as enhanced hind fins, contrary to the existing theory that large hind legs developed after vertebrates transitioned to land.

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  • Maps showing probable relative interactions between leatherback turtles and industrial longline fisheries in the Pacific, over four quarters of the year. (Top row: Q1-Q2. Bottom row: Q3-Q4.)

    GPS Traffic Maps for Leatherback Turtles Show Hotspots to Prevent Accidental Fishing Deaths

    January 08, 2014

    The leatherback turtle in the Pacific Ocean is one of the most endangered animals in the world. Its population has declined by more than 90 percent since 1980. One of the greatest sources of mortality is industrial longlines that set thousands of hooks in the ocean to catch fish, but sometimes catch sea turtles as well. Using modern GPS technology, researchers are now able to predict where fisheries and turtles will interact and to reduce the unwanted capture of turtles by fishermen.

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  • Burger and fries served at a restaurant. Credit: xiaozhuli via Flickr

    Drexel Study Finds an Entire Day Calories Saturated Fat and Sodium in an Average Restaurant Meal

    January 08, 2014

    Consumers tend to think of sit-down restaurants as offering healthier options than fast-food venues but there is little evidence to support that idea. In a new study of nutritional values for menu items at sit-down chain restaurants in the Philadelphia region, Drexel researchers determined the healthfulness of food in various menu categories, including the restaurants’ “healthy choice” offerings. They report that an average restaurant meal is not very healthy at all.

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  • A stained cross-section of a Leipolmeles wasp shows different brain regions. O'Donnell measured and compared the relative sizes of different sensory regions across castes within 12 wasp species.

    Paperwasps in Different Castes Develop Different-Sized Sensory Brain Structures

    January 06, 2014

    A queen in a paperwasp colony largely stays in the dark. The worker wasps, who fly outside to seek food and building materials, see much more of the world around them. A new study led by Drexel professor Sean O'Donnell, PhD, indicates that the brain regions involved in sensory perception also develop differently in these castes, according to the different behavioral reliance on the senses.

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