Ricki Lewis
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Articles by Ricki Lewis

Short Shrift to Evolution?
Editor's Note: In this essay, the authors--both scientists and writers--discuss recent news stories on evolution and express their opinions on how the stories were handled by the mainstream press. Evolution took center stage at the National Association of Biology Teachers (NABT) annual meeting in Reno, Nev., Nov. 3-8, 1998. If the teachers needed a theme, evolution was a logical choice--after all, it underlies and unifies contemporary biology. But NABT had other fish to fry. Despite a spate of c

Fetal Pig Shortage Hamstrings Biology Instructors
Ricki Lewis | | 5 min read
Phrases such as "bidding war," "invest now," and "panic over short supply" evoke images of brave new drugs. An apologetic "It's on back order" is a common refrain from L.L. Bean or Land's End. But these phrases are being applied to the fetal pig, a staple of the biology teaching laboratory as a model of vertebrate anatomy. The foot-long beasts, once considered mere slaughterhouse waste, now bring in more bacon than a nice pair of pork chops. Spiraling fetal pig prices have biology instructors s

New Tests Monitor Thyroid Cancer
Ricki Lewis | | 5 min read
Editor's Note: Contributing Editor Ricki Lewis was diagnosed with thyroid cancer in 1993 and had standard treatment. She will be taking a recently approved test this summer and hopes to participate in the clinical trial of another, both discussed below. Michael Levine When a lump in the neck turns out to be thyroid cancer, many doctors announce, "If you had to get cancer, this is the one to get." Fortunately, treatment is straightforward and effective, but follow-up testing can be uncomfort

Nobel Honors Pioneers of NO
Ricki Lewis | | 6 min read
Scientific insight sometimes comes from the unanticipated convergence of ideas and findings. This is certainly the case for nitric oxide (NO), a molecule whose simplicity belies its profound impact on organisms as diverse as humans and Arabidopsis. On December 10, the Nobel Prize for physiology or medicine will be awarded to three men who, working independently, characterized NO's effect on the cardiovascular system¬ Robert Furchgott, distinguished professor of pharmacology at the State U

Gender-Based Biology Courses Take Diverse Forms
Ricki Lewis | | 9 min read
Introductory general biology courses and textbooks cover a vast amount of material. They tend to stress the similarities of life at the molecular and cellular levels, with Homo sapiens considered but one of many species. For students wishing to learn specifically about the female body, or about differences between the sexes, these courses aren't usually appropriate. ANALOGY: Like women's absence in past medical tests and clinical trials, many problems have not been addressed in biology, anat

How Well Do Mice Model Humans?
Ricki Lewis | | 8 min read
STRIKING RESEMBLANCE: James Croom, who studies Down syndrome mice at North Carolina State University, says the animals are providing valuable information useful to humans. When a page-one article in the May 3, 1998, Sunday New York Times portrayed angiogenesis inhibitors that fight cancer in mice as being possible just around the corner for humans, criticism for raising false hopes erupted. Merely 10 weeks later, however, when researchers from the University of Hawaii reported cloning the fi

The Anatomy of a Press Release
Ricki Lewis | | 7 min read
I write 1,000-page biology textbooks. Tomes. So when in early June a nice public information officer (PIO in media lingo) from Columbia University called to ask if I'd like to write a press release--a mere page or two--I jumped at the chance. Pay was minimal (and yet to arrive) and a byline nonexistent, but I would have a shot at actually making the news, to distill the essence of some exciting new research result in a way that might make it into the mouth of NBC's Tom Brokaw or the pen of The

Erectile Dysfunction: Serious Research for a Serious Problem
You have probably heard more than your share of Viagra jokes; a whole Web site is devoted to them. But impotence, or erectile dysfunction (ED), is no joke. According to a survey (H.A. Feldman et al., Journal of Urology, 151:54-61, 1994), more than 50 percent of men between 40 and 70 suffer from some degree of ED. The figure climbs to 67 percent at age 70. That's 20 to 30 million men, according to the National Institutes of Health. FIRST IN LINE: Viagra is actually the second drug approved t

New Center Expands Origin of Life Studies
Ricki Lewis | | 5 min read
Scientific investigation of life's origins, once mostly a theoretical enterprise, has gained momentum in recent years as biologists have discovered hardy microbes in extreme terrestrial habitats and possible hints of lifelike structures in a Martian meteorite. One recent sign that the field is alive and well is the establishment of a new NASA Specialized Center of Research and Training (NSCORT) for the Study of Origins of Life in the Albany area of New York. MULTIPLE YEARS: James Ferris, profe

Mammalian Cloning Milestone: Mice from Mice from Mice
Ricki Lewis | | 9 min read
It was fitting, perhaps, that Cumulina the cloned mouse made her debut at a press conference in New York City on Gregor Mendel's birthday, July 22. As the father of genetics, Mendel explained genetic variability. As the first mouse cloned from an adult's cell nucleus, Cumulina represents the ultimate in genetic uniformity. So far, 50 mice have been cloned, some through three generations. Photo: ProBio America Inc. THREE GENERATIONS: Researchers at the University of Hawaii cloned these three g

Unraveling Leptin Pathways Identifies New Drug Targets
Ricki Lewis | | 7 min read
Four years after its discovery, the weight-controlling protein hormone leptin is still making news. At the American Diabetes Association meeting in Chicago June 14, researchers from Amgen Inc. of Thousand Oaks, Calif., announced promising results of a Phase I clinical trial of leptin. And more than 100 papers and posters featured leptin at the Endocrine Society's annual meeting in New Orleans, June 24 to 27. Much of the excitement, though, lies beyond leptin, with the other players in the sign

Scientists Meet at Rockefeller to Discuss Molecular Strategies in Biological Evolution
Ricki Lewis | | 6 min read
In science, things often aren't as simple as they seem. This is certainly the case for the genetic code. Even as elegant experiments in the 1960s assigned DNA and messenger RNA (mRNA) base triplets to specific amino acids, researchers were wondering if a protein's blueprints were the sole meaning imparted by those long strings of A, T, G and C. But back then, they could do little more than wonder. Today, with more than a dozen genomes sequenced, researchers can ask age-old questions as well as










