News Articles

An international team of scientists has come up with either a surprising or unsurprising finding about whether air pollution increases or decreases rainfall. Their conclusion: a rather frustrating both, depending on local environmental conditions.
In an era of climate change, understanding how rain is impacted by pollution has significant consequences and in an article appearing in Science, the scientific team has published the results of its research untangling the contradictions surrounding the conundrum. They do this by following the energy flow through the atmosphere and the ways it is influenced by aerosol (airborne) particles. This allows the development of more exact predictions of how air pollution affects weather, water resources and future climates.

Even closely related plants produce their own natural chemical cocktails, each set uniquely adapted to the individual plant's specific habitat. Comparing anti-fungals produced by tobacco and henbane, researchers at the Salk Institute for Biological Studies discovered that only a few mutations in a key enzyme are enough to shift the whole output to an entirely new product mixture. Making fewer changes led to a mixture of henbane and tobacco-specific molecules and even so-called "chemical hybrids," explaining how plants can tinker with their natural chemical factories and adjust their product line to a changing environment without shutting down intracellular chemical factories completely.
The findings not only gave the Salk scientists a glimpse of the plants' evolutionary past, but may help them fine-tune the production of natural and environmentally friendly fungicides and pesticides as well as new flavors and fragrances by turning "enzymatic knobs" in the right direction.

People are more frugal when paying cash than using credit cards or gift certificates. They also spend less when they have to estimate expenses.
The conclusion that cash discourages spending while credit and gift cards encourage it arises from four studies that examined two factors in purchasing behavior: when consumers part with their money (cash versus credit) and the form of payment (cash, cash-like scrip, gift certificate or credit card). The results, wrote the authors: "The more transparent the payment outflow, the greater the aversion to spending, or higher the 'pain of paying.'"
Cash is viewed as the most transparent form of payment.

Dr. Rajendra Pachauri, Chair of the Intergovernmental Panel on Climate Change (The IPCC and Al Gore were joint winners of the 2007 Nobel Peace Prize) is calling on individuals to cut their carbon footprints by transforming their diets at a lecture hosted by Compassion in World Farming lecture in London tomorrow (Monday 8 September 2008).
Current global animal production is responsible for 18 per cent of all human-induced Greenhouse Gas (GHG) emissions, he says, with more than 60 billion farm animals reared each year. Th IPCC projects that figure will double by 2050.
An average household would reduce the impact of their greenhouse gas emissions by more if they halved their meat consumption than if they halved their car usage, he says.

A third of patients have unnecessary tubes (cannulae) inserted when they are in hospital, needlessly exposing them to serious complications such as infection and blood clots, research launched at the British Pharmaceutical Conference (BPC) in Manchester has shown.
Pharmacy researchers from Robert Gordon University in Aberdeen also showed that in 71% of patient records there was no documentation of cannula insertion and in 57%, no documentation of cannula removal.
Complications associated with intravenous (IV) cannula use include problems with veins (phlebitis), leakage of drugs into tissues around the site of the tube (extravasations), serious infection and blood clots.

The fight against fake medicines could soon be aided by a small, portable device that quickly measures the hardness of a tablet, revealing whether it is counterfeit, according to research presented at the British Pharmaceutical Conference (BPC) in Manchester.
The study tested a series of dummy paracetamol tablets made with varying degrees of real medicine, versus lactose (an ingredient used by counterfeiters to replace the active drug). Tests showed that the fake tablets were harder than the tablet with the correct amount of paracetamol, and were more difficult to crush.

Engineers from NASA and Pratt & Whitney Rocketdyne successfully completed a series of hot-fire altitude tests using liquid methane on the RS-18 engine, which was last used to lift astronauts off the moon's surface 36 years ago and was originally flown with storable hypergolic propellants during the Apollo moon missions.
The tests, conducted at White Sands test facility in New Mexico, are part of the technology development for NASA's Constellation program, and gathered important data on ignition, performance measurement, and rapid start and stop.
The RS-18 engine has been modified to burn liquid oxygen and liquid methane, providing increased safety and performance to future space vehicles.

Almost 60% of British women use at least one herbal product during pregnancy, research launched at the British Pharmaceutical Conference (BPC) in Manchester has revealed.
In the first UK study of its kind, pharmacy researchers from the University of East Anglia found that despite the popularity of herbal products, almost half (49%) of the pregnant women were uncertain about the safety of the preparations and took them on the recommendation of family or friends rather than a healthcare professional.

Bats' ability to echolocate may have evolved more than once, according to research published this week by Queen Mary, University of London scientists.
Species of bat with the ability to echolocate do not all group together in the evolutionary tree of life - some are more related to their non-echolocating cousins, the fruit bats. This has raised the question of whether echolocation in bats has evolved more than once, or whether the fruit bats somehow lost their ability to echolocate.

Mammalian fatty acid synthase is one of the most complex molecular synthetic machines in human cells. It is also a promising target for the development of anti-cancer and anti-obesity drugs and the treatment of metabolic disorders. Now researchers at ETH Zurich have determined the atomic structure of a mammalian fatty acid synthase. Their results have just been published in Science magazine.
Synthesis of fatty acids is a central cellular process that has been studied for many decades. Fatty acids are used in the cell as energy storage compounds, messenger molecules and building blocks for the cellular envelope. Until now, individual steps of this process have been investigated using isolated bacterial enzymes. However, in higher organisms – except plants – fatty acid synthesis is catalyzed by large multifunctional proteins where many individual enzymes are brought together to form a "molecular assembly line".

Basil can protect against the harmful effects of ageing, according to research presented at the British Pharmaceutical Conference (BPC) in Manchester.
Holy basil, (Latin name Ocimum sanctum), is a close relative of the herb commonly used in Western cooking. Native to India, its extract has long been used in the ancient system of Ayurvedic medicine practiced in India and other parts of Asia as a rejuvenation drug, to promote a youthful state of physical and mental health.
In the first formal study of the herb, pharmacy researchers found that holy basil extract was effective at actively searching for and eliminating harmful molecules and protecting against damage caused by some free radicals in key organs such as the heart, liver and brain.

Ramadan is a Muslim religious observance in which participants do not eat or drink anything from dawn until sunset.
Researchers from the departments of Department of Nutrition and Bromatology and Department of Chemistry-Physics of the University of Granada have carried out a study in which they have revealed the need of counterbalancing the diet of the population who follow Ramadan.
According to the collected data, in this period of time macronutrient consumption levels are not appropriate if compared with the reference recommendations. The number of daily ingestions drops to 2 or 3, with regard to the 4 or 5 ingestions of the rest of the population in this period. In addition, scientists have established that, because of the diet, corporal fat increases and muscular mass falls.