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General Science / Chemistry news 1234

No evidence to support 'organic is best'

August 07, 2008 | User rating: 3.7 / 5 after 73 vote(s) | User comments: 32

New research in the latest issue of the Society of Chemical Industry's (SCI) Journal of the Science of Food and Agriculture shows there is no evidence to support the argument that organic food is better than food grown ...


Strange molecule in the sky cleans acid rain, scientists discover

August 12, 2008 | User rating: 4.3 / 5 after 47 vote(s) | User comments: 9

Researchers have discovered an unusual molecule that is essential to the atmosphere's ability to break down pollutants, especially the compounds that cause acid rain. It's the unusual chemistry facilitated ...


'Green' potato health risk can be eliminated by cutting away affected area

July 25, 2008 | User rating: 3.7 / 5 after 11 vote(s) | User comments: 5

Potatoes that have turned 'green' can potentially contain a naturally occurring toxin called Glycoalkaloids (GA) and pose a risk to public health according to a review paper published in the latest online issue of SCI's Journal ...


Engineers build mini drug-producing biofactories in yeast

August 15, 2008 | User rating: 4.6 / 5 after 22 vote(s) | User comments: 4

Researchers at the California Institute of Technology have developed a novel way to churn out large quantities of drugs, including antiplaque toothpaste additives, antibiotics, nicotine, and even morphine, using mini biofactories--in ...


Gel undergoes Peristalsis

August 18, 2008 | User rating: 4.5 / 5 after 15 vote(s) | User comments: 4

(PhysOrg.com) -- Large or small, machine parts only move when controlled by an external impulse. Biological systems, on the other hand, are capable of autonomous movements that continuously follow their own rhythms and spatial ...


Newly detected air pollutant mimics damaging effects of cigarette smoke

August 17, 2008 | User rating: 4.4 / 5 after 26 vote(s) | User comments: 3

A previously unrecognized group of air pollutants could have effects remarkably similar to harmful substances found in tobacco smoke, Louisiana scientists are reporting in a study scheduled for presentation ...


Catalyst mystery unlocked

August 18, 2008 | User rating: 4.7 / 5 after 12 vote(s) | User comments: 3

Different keys are not supposed to fit the same lock, but in biological systems multiple versions of a catalyst all make a reaction go, according to a new study that explains the phenomenon. Scheduled for online publication ...


Polymer electric storage, flexible and adaptable

August 20, 2008 | User rating: 4.4 / 5 after 35 vote(s) | User comments: 3

(PhysOrg.com) -- The proliferation of solar, wind and even tidal electric generation and the rapid emergence of hybrid electric automobiles demands flexible and reliable methods of high-capacity electrical storage. Now a ...


A better way to make hydrogen from biofuels

August 20, 2008 | User rating: 4.5 / 5 after 32 vote(s) | User comments: 2

Researchers here have found a way to convert ethanol and other biofuels into hydrogen very efficiently. A new catalyst makes hydrogen from ethanol with 90 percent yield, at a workable temperature, and using inexpensive ingredients.


For Clean Water: Chlorine-tolerant membranes for desalination

July 22, 2008 | User rating: 4.3 / 5 after 11 vote(s) | User comments: 1

(PhysOrg.com) -- One of the most pressing needs of our time is safe, sustainable access to fresh water. The dominant technology for desalination of water is membrane-based desalination, an energy-efficient, environmentally ...


Just dive in: Natural product hybrid provides antimicrobial and cell-resistant surfaces

August 01, 2008 | User rating: 4.2 / 5 after 12 vote(s) | User comments: 1

(PhysOrg.com) -- Infections following treatment in clinics, retirement homes, and long-term care facilities are a grave problem for patients, and resistant germs can be particularly devastating.


Electronic tongue tastes wine variety, vintage

August 04, 2008 | User rating: 3.7 / 5 after 6 vote(s) | User comments: 1

You don't need a wine expert to identify a '74 Pinot Noir from Burgundy – a handheld "electronic tongue" devised by European scientists will tell you the grape variety and vintage at the press of a button.


Fuel from Cellulose

August 07, 2008 | User rating: 4.7 / 5 after 14 vote(s) | User comments: 1

Independence from fossil fuel exporting nations, a reduction in the release of greenhouse gases, conservation of dwindling resources: there are any number of reasons to stop the use of fossil fuels.


That tastes -- sweet? Sour? No, it's definitely calcium!

August 20, 2008 | User rating: 3.8 / 5 after 9 vote(s) | User comments: 1

Chemists in Philadelphia are reporting a discovery that could expand the palate of human tastes — sweet, sour, salty, bitter, and savory — to include a new taste sensation that they term "calcium."