Archive for June, 2010
Pediatrician takes on rare metabolic diseases
Friday, June 4, 2010, 9:48 am 2 Comments | Post a Comment
Dr. Maria Escolar
Dr. Maria Escolar was a 35-year-old pediatrician overseeing a program for doctors in training at Duke University 12 years ago when she saw her first patient with Krabbe disease.
Named after a Danish neurologist who first described it in 1913, Krabbe disease is a rare, genetic disorder that is painful and damages mental and motor skills. Children with the disease show no symptoms at birth, but without treatment they go deaf and blind and usually die by the time they are 3.
“It’s one of the most horrible diseases I’ve ever encountered,” Escolar said. Read more…
ScienceOnline2010 - interview with Cassie Rodenberg
Tuesday, June 1, 2010, 9:50 pm No Comments | Post a CommentContinuing with the tradition from last two years, I will occasionally post interviews with some of the participants of the ScienceOnline2010 conference that was held in the Research Triangle Park, NC back in January. See all the interviews in this series here. You can check out previous years’ interviews as well: 2008 and 2009.
Today, I asked Cassie Rodenberg to answer a few questions:
Seventeen Years of Discovery in Duke Forest
Tuesday, June 1, 2010, 1:22 pm 5 Comments | Post a Comment
Higher concentrations of carbon dioxide are pumped into four of the experimental rings. Photo: Will Owen
Late in 2010, an epic ecological experiment in the Triangle will begin drawing to a close when carbon dioxide stops pumping from four massive rings of towers in the Duke Forest. Since 1996, more than 250 scientists at Duke and dozens of other institutions have measured the response of this forest ecosystem to the elevated amounts of carbon dioxide expected in the Earth’s atmosphere in the future. They’ve measured tree and plant growth, photosynthesis, leaf size, soil composition, root growth, and water use in the plots bathed in elevated carbon dioxide and in three other “ambient” control plots.
The first, prototype ring was built in 1994; six more came in 1996 (three controls and three experiments). Each ring consists of 16 metal towers in a 30-meter diameter. Computer-controlled instruments in the experimental rings bathe the interior of the plot in carbon dioxide. It’s called Free-Air CO2 Enrichment, or FACE. As opposed to “chamber studies,” in which plants are studied in carefully controlled growth chambers or greenhouses, the rings are open to nature. That means that mammals and insects can circulate freely and that natural events like hurricanes, ice storms, and droughts affect the research site. Read more…
