June 20, 1997
For more information on these science news and feature story tips, please
contact the public information officer at the end of each item at (703)
292-8070. Editor: Bill Noxon
Contents of this News Tip:
Tiny pockets and hair tufts that appear on the undersides of leaves
offer the shelter necessary to house a population of plant-protecting
bugs -- bodyguards if you will -- against predatory plant-eaters.
National Science Foundation (NSF)-supported researchers at the University
of California at Davis recently simulated these naturally occurring shelters,
known as "leaf domatia," on cotton plants. By doing so, the scientists
reduced cotton-eating spider mites and boosted cotton yield by 30 percent.
These results offer the first experimental evidence that plants and certain
bugs both benefit from the presence of domatia.
"Results of this research indicate that domatia may offer a natural
biological control strategy as an alternative to the use of pesticides," explains
researcher Anurag Agrawal of UC-Davis.
Spider mites, the third largest cotton pest nationwide, have been difficult
to control because they produce a new generation every seven to ten days,
and are resistant to many chemical pesticides. [Cheryl Dybas]
Top of Page
Americans say "happy" while the Japanese say "ureshii;" but do they
experience these emotions in the same way, or does culture convert feelings?
In a new NSF-funded study, a research team led by anthropologist A.
Kimball Romney of the University of California at Irvine interviewed native
speakers in English and Japanese. The team then mapped how the two groups
perceived similarities of paired words describing good vs. bad feelings,
active vs. passive.
The researchers found strikingly similar responses in most cases, suggesting
that humans experience basic emotions like anger, happiness, envy and
love almost identically, despite different cultural beliefs, social norms
and languages.
Differences that did appear in the study were slight compared to the
similarities. English speakers rated "shame" as a bit more negative an
emotion than the Japanese, says Romney.
The research, funded through NSF's Methodology, Measurement and Statistics
Program, contributes to science's nature vs. nurture debate. Findings
seemingly side with those who believe that humans are pretty much the
same no matter where they are born and raised. [George Chartier]
Top of Page
Cloning is not a revolutionary technology, it presents no radically
new ethical issues and it does not deserve the hysteria heaped on it by
the media.
"We have to stop thinking about cloning as something completely 'good'
or 'bad' and instead look hard at individual situations, at the many potential
benefits as well as dangers" before rushing to judgment, Allen Buchanan,
a medical ethicist conducting National Science Foundation (NSF)-funded
research, says. Buchanan has been studying ethical issues arising from
the commercial development of new genetic technologies.
Buchanan, a professor of philosophy, business ethics and medical ethics
at the University of Wisconsin's School of Medicine, argues that there
are other technologies which pose more immediate threats to society. Society
has been addressing similar moral dilemmas, he says, such as "playing
God with nature" long before cloning became an issue. [George Chartier]
Top of Page
Editors: NSF is making a transition to new forms of electronic distribution
of news materials. We will eventually replace the current "listserve" with
a new Custom News Service. From the NSF home page, (URL: http://www.nsf.gov),
you will be able to automatically sign up for and receive electronic transmissions
of all materials (or those of your own choosing). More details are forthcoming.
**Receive NSF news releases and tipsheets electronically via NSFnews. To subscribe, send an e-mail message to mailto:listmanager@nsf.gov; in the body of the message, type "subscribe nsfnews" and then type your name. Also see NSF news products at: http://www.nsf.gov/od/lpa/start.htm,
http://www.eurekalert.org/, and http://www.ari.net/newswise.
|