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Your search has returned 52 articles:
  • News

    Floral Shocker: Blooms shake roots of flowering-plant family

    Imagine discovering a mammal without mammary glands or an insect with eight legs. Aquatic herbs in the genus Hydatella pose a similar paradox—they lack a defining developmental feature of flowering plants, raising questions about their evolution and rampant speciation during the past 135 million years.

    Evolutionary biologists group together organisms that share unique traits,...

    03/19/2008 - 13:25 Plants
  • News

    Spying Vision Cells: Eye's motion detectors are finally found

    The eye's retina does more than register images the way film or a digital camera detector does. To allow it to begin analyzing an image, the retina has specialized nerve cells that respond to motion or other important features in the image detected by the light-sensing rod and cone cells.

    Scientists discovered the specialized cells that sense motion in the retinas of cats and other...

    10/10/2007 - 15:30 Other
  • Food for Thought

    Crusty Chemistry

    Want to make a piece of pizza healthier? Try using whole-wheat dough. Give it a full 2 days to rise, and then cook the tomato pie a little longer and hotter than usual. That was the recipe shared last week by researchers at the American Chemical Society meeting in Chicago.

    Jeffrey Moore and Liangli Lucy Yu of the University of Maryland at College Park have been experimenting with...

    04/03/2007 - 19:28 Nutrition
  • News

    Pollution Fallout: Are unattractive males Great-gram's fault?

    A new study of mate preferences in rodents raises the prospect that pollutant exposures can have behavioral repercussions that persist generation after generation. In the experiment, female rats shunned males whose grandfathers had been exposed in the womb to a fungicide used on fruit crops.

    Though brief, the vinclozolin exposures occurred when the fetal males' reproductive organs were...

    03/28/2007 - 12:49 Earth & Environment
  • News

    Old plants were lost in the grass

    An obscure family of small, narrow-leaved water plants that have for years been classified as oddball relatives of grasses turns out to represent one of the most ancient surviving lineages of flowering plants, researchers say.

    These plants, the Hydatellaceae, belong with water lilies near the base of the family tree of flowering plants, say Sean Graham of the University of...

    03/27/2007 - 19:12 Plants
  • News

    Waistline Worry: Common chemicals might boost obesity

    A family of chemicals implicated in testosterone declines may also be contributing to recent spikes in obesity and diabetes, according to a new study.

    Phthalates show up in a wide range of manufactured items, from cosmetics to vinyl flooring to medical devices and drug coatings. With people's extensive exposure to phthalates, the chemicals' breakdown products, or metabolites, appear in...

    03/21/2007 - 08:07 Chemistry
  • News

    Alien Alert: Shrimpy invader raises big concerns

    In November, an unusual swarm of tiny critters caught the attention of a crewmember on a National Oceanic and Atmospheric Administration boat docked in a Lake Michigan channel. He asked Steven Pothoven of NOAA's Great Lakes environmental field station at Muskegon, Mich., what the critters were.

    "I could see they weren't fish, so I netted some," the biologist recalls. Under...

    01/10/2007 - 10:30 Ecology
  • Feature

    Bad-News Beauties

    With striking red, black, and white stripes decorating its body, fins, and some dozen spines along its head, back, and sides, the red lionfish is at once beautiful and frightening. The football-shaped fish can grow up to 18 inches long and is poisonous to the touch. At smaller sizes, this subtropical fish from Asia is extremely popular for hobbyists with saltwater aquariums, but the red...

    09/05/2006 - 14:56 Ecology
  • News

    Plastics agent worsens skin allergies

    Low doses of one of the most commonly used softeners in plastics can aggravate dust-mite allergy, researchers report.

    The plasticizer di(2-ethylhexyl) phthalate (DEHP) is ubiquitous in air, water, and most people's bodies. It's in plastics used for toys, food packaging, medical products, and housewares.

    A few earlier studies had correlated allergy severity with exposure to DEHP in...

    09/05/2006 - 01:53 Earth & Environment
  • News

    Social jet lag: Need a smoke?

    From Munich, at the Euroscience Open Forum meeting

    People who have a hard time waking in the morning because their bodies' internal clocks are out of sync with their sleep schedules are said to have "social jet lag." Researchers in Europe have determined that the phenomenon strongly correlates with smoking.

    Battling one's biological clock can leave people weary in the same way as...

    08/01/2006 - 12:19 Other