(The other studies are also pretty interesting)
The Week
Unsettling News on Knee Surgery, and a Striking Neanderthal Gene
By DOUGLAS QUENQUA
Published: December 30, 2013
“Houston, you’ve got yourself a new pump module,” Col. Michael S. Hopkins said last Tuesday after some maintenance
on the International Space Station. Repairs to the cooling system were
needed after a valve malfunctioned, forcing astronauts to dim the lights
and curtail operations. “It’s like Christmas morning, opening up a
little present here,” the astronaut Richard A. Mastracchio said.
Agence France-Presse — Getty Images
An image captured from NASA TV showing astronaut Mike
Hopkins during a spacewalk outside the Ineternational Space Station.
Developments
Orthopedics
Doubts About a Knee Operation
Arthroscopic knee surgery is no more effective than fake operations for people with a certain kind of injury, according to an unusual study from Finland. People with a torn meniscus
(the crescent-shaped cartilage that helps cushion and stabilize knees)
were split into groups: One was given surgery, the other only anesthesia
and incisions. A year later, most patients in each group said they felt
better and would have the procedure again.
The study does not imply the surgery never helps, the authors said, but
adds to a body of research that suggests it should be aimed at a
narrower subset of patients.
Genetics
An Ancient Link for Diabetes
Researchers have identified gene mutations
that may explain why Latinos are almost twice as likely to develop Type
2 diabetes as Caucasians and African-Americans. And in a twist, the
quirk can be traced to Neanderthals.
While trying to explain the high rate of Type 2 diabetes among Latinos,
an international team of scientists happened on an ancient gene, most
likely involved in fat metabolism. Having mutations in that gene raises a
person’s risk by about 20 percent; having two copies, one from each
parent, raises it by 40 percent.
“As far as I know, this is the first time a version of a gene from
Neanderthal has been connected to a modern-day disease,” David
Altshuler, a geneticist at Harvard and an author of the study, told NPR.
Energy
A Plant Fuels Energy Hopes
A company in San Diego says it has cultivated hybrid strains
of a plant that could produce enough biofuel to compete with energy
sources like petroleum. The plant, jatropha, whose seeds produce a
high-quality oil that can be refined into low-carbon fuel, was once
dismissed because it produced too few seeds. But thanks to advances in
molecular genetics and DNA sequencing, the start-up SGB domesticated the
plant in a few years, rather than decades.
The company is also working to identify traits that make certain strains
of the plant resistant to heat or cold. If such traits could be
identified in cash crops like corn and soybeans, the knowledge could be
valuable as climate change accelerates.
Psychology
For Anxiety, Don’t Keep Calm
Feeling nervous? Don’t bother calming down. You’re better off getting
excited, according to a new study from Harvard Business School.
Participants in several anxiety-inducing experiments consistently
performed better when prompted to get excited rather than to relax, the
study found. For example, people told to say “I am excited” before
delivering a public speech gave longer, more competent presentations and
appeared more relaxed than speakers told to say “I am calm.” The shift
from anxiety to excitement may be eased by the fact that both are highly
aroused states, suggested the author of the study, published in The Journal of Experimental Psychology: General.
Coming Up
Technology
Dry Cleaning Challenge
Can you build a washing machine that uses no liquid, creates no wrinkles
and doesn’t damage clothes? To win $20,000 from the “open innovation”
firm InnoCentive, you don’t have to.
The company, which builds inventions from crowdsourced ideas, is seeking
proposals for better clothes-washing techniques — no working prototype
needed — for its Future Clothes Washing Technology challenge.
The deadline is Jan. 11, but be warned: The winner must surrender
intellectual property rights. So maybe give them your second-best idea.
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