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Last week, scientists announced the interim results of one of modern physiology’s most closely watched experiments: the effects of caloric restriction on the lifespan of non-human primates.
The report was maddeningly mixed.
Caloric restriction seemed to reduce the incidence of several diseases, but when it came to mortality—a somewhat important factor when it comes to longevity— the data were statistically not significant. We still do not know if caloric restriction works in primates, which, of course, we are.
A new impact on Jupiter is getting all the attention this week but it can happen here - and has. Nanosized diamonds found just below the surface of Santa Rosa Island off the coast of Santa Barbara are evidence of a 'cosmic impact' approximately 12,900 years ago
The hypothesis by the researchers behind the study is that fragments of a comet struck across North America at that time.
Purdue University researchers have created magnetically responsive gold nanostars that gyrate when exposed to a rotating magnetic field and can scatter light to produce a pulsating or "twinkling" effect. This twinkling allows them to stand out more clearly from noisy backgrounds like those found in biological tissue.
Alexander Wei, a professor of chemistry, and Kenneth Ritchie, an associate professor of physics, led the team that created the new gyromagnetic imaging method.
'Sun power for soldiers' sounds like aging hipsters have taken over the military, right? No, this is still manly; a special "conductive ink" that can be used to make printed organic photovoltaic solar cell panels on very thin, flexible surfaces using ink-jet printing.
The research was done by scientists at the Air Force Research Laboratory Materials and Manufacturing Directorate (AFRL/RX), with Plextronics, Inc., and the Pennsylvania NanoMaterials Commercialization Center, both located in the City of Champions, Pittsburgh, PA.
The ready-to-use, technology captures sunlight and stores it as energy to power Global Positioning System components, portable communications, and other devices for U.S. soldiers.
How do individual cells survive conditions that should kill them? It's long been a mystery of nature but a team of researchers recently tracked the chemical changes in Desulfovibrio vulgaris, which is a single-cell bacterium that normally can only exist in an oxygen-free environment. They exposed the cells to the most hostile of conditions — air — and watched as some cells temporarily survived by initiating a well-orchestrated sequence of chemical events.
In all the talk about using skin cells to create pluripotent stem cells that don't need human embryonic destruction, dental and tissue engineering researchers at Tufts University School of Dental Medicine and the Sackler School of Graduate Biomedical Sciences have gone the other way and used human embryonic stem cells (hESCs) to generate complex tissues that mimic human skin and the oral mucosa (the moist tissue that lines the inside of the mouth).
Their proof-of-concept study is published in Tissue Engineering Part A.
When we were kids, you could do stupid things and, if you absolutely needed them to be left behind, you moved away and never spoke to your old friends again. Now stupid things end up on YouTube. Forever.
What if you don't want your college-era rants showing up in a job interview?
University of Washington researchers say they have developed a way to make online information expire. After a set time period, electronic communications such as e-mail, Facebook posts and chat messages would automatically self-destruct, becoming irretrievable from all Web sites, inboxes, outboxes, backup sites and home computers. Not even the sender could retrieve them.
Don't get Michael Schumacher or Jeff Gordon on the phone yet but we could one day be driving on tires made from trees.
Wood science researchers at Oregon State University say they could cost less, perform better and save on fuel and energy, though has any researcher not said that exact same thing about every R&D project they are involved in?
Epidemiological studies have shown that some oral contraceptives are less effective at preventing pregnancy in obese women until an 'effective blood concentration' has been reached, meaning there is a 'window' where the contraceptive will not be effective in heavier women.
With estimates that up to 30 percent of adults in the U.S. are obese, this could be important. Fixing contraceptives is an easier path than telling people to eat less while simultaneously telling them that society's unrealistic body images should be resisted.
