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Restoring a natural root signal helps to fight a major corn pest

A longstanding and fruitful collaboration between researchers at the Max Planck Institute for Chemical Ecology and the University of Neuchtel in Switzerland, together with contributions from colleagues in Munich and the US, has produced another first: the successful manipulation of a crop plant to...

Salt marshes: A natural and unnatural history

Now championed as critical habitats for plants, animals, and people because of the environmental service and protection they provide, salt marshes were once considered unproductive wastelands, home solely to mosquitoes and toxic waste, and mistreated for centuries by the human population. Explorin...

Scientists link immune system's natural killer cells to infant liver disease

CINCINNATI Scientists have linked an overactive response by one of the immune system's key weapons against infection natural killer, or NK, cells to the onset of biliary atresia in infants, a disease where blocked bile ducts can cause severe liver damage and death. Researchers at Cincinnati ...

Small molecules mimic natural gene regulators

ANN ARBOR, Mich.---In the quest for new approaches to treating and preventing disease, one appealing route involves turning genes on or off at will, directly intervening in ailments such as cancer and diabetes, which result when genes fail to turn on and off as they should. Scientists at the Un...

Towards a natural pacemaker

Artificial heart pacemakers have saved and extended the lives of thousands of people, but they have their shortcomings such as a fixed pulse rate and a limited life. Could a permanent biological solution be possible? Richard Robinson and colleagues at New York's Columbia and Stony Brook Univ...

New simulation shows consequences of a world without Earth's natural sunscreen

The year is 2065. Nearly two-thirds of Earth's ozone is gone -- not just over the poles, but everywhere. The infamous ozone hole over Antarctica, first discovered in the 1980s, is a year-round fixture, with a twin over the North Pole. The ultraviolet (UV) radiation falling on mid-latitude cities l...

Synthesizing the most natural of all skin creams

Even after nine months soaking in the womb, a newborn's skin is smooth unlike an adult's in the bath. While occupying a watery, warm environment, the newborn manages to develop a skin fully equipped to protect it in a cold, dry and bacteria-infected world. A protective cream called Vernix caseosa...

A natural approach for HIV vaccine

For 25 years, researchers have tried and failed to develop an HIV vaccine, primarily by focusing on a small number of engineered "super antibodies" to fend off the virus before it takes hold. So far, these magic bullet antibodies have proved impossible to produce in people. Now, in research to be...

Understanding natural crop defenses

LA JOLLA, CA Ever since insects developed a taste for vegetation, plants have faced the same dilemma: use limited resources to out-compete their neighbors for light to grow, or, invest directly in defense against hungry insects. Now, an international team of scientists at the Salk Institute for B...

Even natural perfumes may cause allergies

Hypersensitivity to perfumes is the most common contact allergy in adults. Research at the University of Gothenburg has demonstrated that even natural aromatic oils, which many deem harmless compared to synthetic perfumes, may cause allergic reactions. Roughly one in five adults in northern Eu...

Ocean islands fuel productivity and carbon sequestration through natural iron fertilization

An experiment to study the effects of naturally deposited iron in the Southern Ocean has filled in a key piece of the puzzle surrounding iron's role in locking atmospheric carbon dioxide (CO2) in the ocean. The research, conducted by an international team led by Raymond Pollard of the National Oce...

Particulate emission from natural gas burning home appliances

New Rochelle, NY, January 8, 2009Natural gas, believed to be among the cleanest forms of fuel, does emit ultrafine airborne particulate matter when burned in home appliances such as stove tops and water heaters, according to a report in the December 2008 issue (Volume 25, Number 10) of Environmen...

Grape-seed extract kills laboratory leukemia cells, proving value of natural compounds

PHILADELPHIA An extract from grape seeds forces laboratory leukemia cells to commit cell suicide, according to researchers from the University of Kentucky. They found that within 24 hours, 76 percent of leukemia cells had died after being exposed to the extract. The investigators, who report t...

Apolipoprotein(a): A natural regulator of inflammation

In a study to be published in the January 09 issue of Experimental Biology and Medicine , Hoover-Plow and co-workers in seeking to define a role of apo(a) in leukocyte recruitment have identified a novel activity of apo(a) apolipoprotein that may function as a natural and cell specific suppressor...

New research shows how gene function drives natural selection in important class of genetic elements

Athens, Ga. Transposons are the Clark Kents of a genome. Apparently mild-mannered and inconsequential but with sudden bursts of activity, these free-floating bits of genetic material have for millions of years been sneaking into the genetic maps of plants and animals, dramatically increasing a ge...

Honey adds health benefits, is natural preservative and sweetener in salad dressings

Antioxidant-rich honey is a healthy alternative to chemical additives and refined sweeteners in commercial salad dressings, said a new University of Illinois study. "To capitalize on the positive health effects of honey, we experimented with using honey in salad dressings," said Nicki Engeseth,...

Ecologists say metabolism accounts for why natural selection favors only some species

RIVERSIDE, Calif. Why are some species of plants and animals favored by natural selection? And why does natural selection not favor other species similarly? According to a UC Riverside-led research team, the answer lies in the rate of metabolism of a species how fast a species consumes energy...

International Council for Science launches major research program on natural disasters

Maputo, Mozambiquein response to the urgent need to reduce the impacts of natural disasters, the International Council for Science (ICSU) has launched a new, 10-year, international research programme designed to address the gaps in the knowledge and methods that are preventing the effective applic...

Design of a compound that stabilizes the main natural suppressor of tumors

This press release is available in Spanish . An interdisciplinary team of researchers, headed by Ernest Giralt at the Institute for Research in Biomedicine (IRB Barcelona) and Javier de Mendoza at the "Institut Catal d'Investigaci Qumica" (ICIQ, Tarragona), have discovered a substance with ...

Discovery of natural compounds that could slow blood vessel growth

Using computer models and live cell experiments, biomedical engineers at the Johns Hopkins University School of Medicine have discovered more than 100 human protein fragments that can slow or stop the growth of cells that make up new blood vessels. Reporting online last week in the Proceeding...

How plants fine tune their natural chemical defenses

LA JOLLA, CA 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 ...

Old before their time? Aging in flies under natural vs. laboratory conditions

Evolutionary studies of aging typically utilize small, short-lived animals (insects, worms, mice) under benign conditions constant temperature and humidity, no parasites, superabundant food in the laboratory. Oddly enough, very little is known about aging in such animals in their harsh, stressfu...

NYU, American Museum of Natural History receive $1.6 million NSF grant

New York University and the American Museum of Natural History have received a $1.6 million grant from the National Science Foundation to explore plant evolution and to create a public database that provides information about the structure and inferred function of proteins found in two plant genom...

'Armored' fish study helps strengthen Darwin's natural selection theory

Shedding some genetically induced excess baggage may have helped a tiny fish thrive in freshwater and outsize its marine ancestors, according to a UBC study published today in Science Express . Measuring three to 10 centimetres long, stickleback fish originated in the ocean but began populatin...

New role for natural killers!

Scientists at the University of York have discovered a new role for a population of white blood cells, which may lead to improved treatments for chronic infections and cancer. Natural Killer (or NK) cells are abundant white blood cells that were recognised over 30 years ago as being able to kil...

OU researchers isolate microorganisms that convert hydrocarbons to natural gas

When a group of University of Oklahoma researchers began studying the environmental fate of spilt petroleum, a problem that has plagued the energy industry for decades, they did not expect to eventually isolate a community of microorganisms capable of converting hydrocarbons into natural gas. ...

How nonstick bugs evade natural fly paper

There are few things more irritating than a fly buzzing around the house. South Africans have an unconventional solution to the problem. They hang up a bunch of Roridula gorgonias leaves. Attracted to the shiny adhesive droplets on the leaf's hairs, the hapless pest is soon trapped by the natura...

How non-stick bugs evade natural fly paper

There are few things more irritating than a fly buzzing around the house. South Africans have an unconventional solution to the problem. They hang up a bunch of Roridula gorgonias leaves. Attracted to the shiny adhesive droplets on the leaf's hairs, the hapless pest is soon trapped by the natura...

Mustard -- hot stuff for natural pest control

Researchers, growers and Industry specialists from 22 countries are sharing the latest research into the use of Brassica species, such as mustard, radish, or rapeseed, to manage soil-borne pests and weeds a technique known as biofumigation. " Brassica plants naturally release compounds that ...

Argyrin: Natural substance raises hope for new cancer therapies

The effective treatment of many forms of cancer continues to pose a major problem for medicine. Many tumours fail to respond to standard forms of chemotherapy or become resistant to the medication. Scientists at the Helmholtz Centre for Infection Research (HZI) in Braunschweig, the Hannover Medica...

A baby's smile is a natural high

The baby's smile that gladdens a mother's heart also lights up the reward centers of her brain, said Baylor College of Medicine researchers in a report that appears in the journal Pediatrics today. The finding could help scientists figure out the special mother-infant bond and how it sometim...

Salk researchers reprogram adult stem cells in their natural environment

LA JOLLA, CA In recent years, stem cell researchers have become very adept at manipulating the fate of adult stem cells cultured in the lab. Now, researchers at the Salk Institute for Biological Studies achieved the same feat with adult neural stem cells still in place in the brain. They successf...

Forest canopies help determine natural fertilization rates

Nitrogen is the primary nutrient that dictates productivity (and thus carbon consumption) in boreal forests. In pristine boreal ecosystems, most new nitrogen enters the forest through cyanobacteria living on the shoots of feather mosses, which grows in dense cushions on the forest floor. These b...

Biodiversity as a natural resource

This press release is available in German . Bonn/Berlin. What will the loss of biodiversity cost us in the long term" How much do national economies need to invest now in order to stop the trend" And what price will we have to pay if we do not act" These are the questions the TEEB -- The ...

People with diabetes may have all natural citrus supplement

SAN DIEGO, CA., April 9. . . Two new studies presented at the Experimental Biology Annual Meeting suggest that an all-natural dietary supplement made from citrus may help people with type 2 diabetes lower their blood glucose numbers after a meal and their LDL-cholesterol levels. Mal Evans, DV...

Jeremy Jackson honored by Harvard Museum of Natural History

Jeremy Jackson, renowned marine ecologist with Scripps Institution of Oceanography at UC San Diego, has been selected to receive the 11th annual Roger Tory Peterson Medal presented by the Harvard Museum of Natural History. Jackson will deliver the Roger Tory Peterson Memorial Lecture on Sunday, Ap...

Smithsonian's National Museum of Natural History reveals ants as fungus farmers

It turns out ants, like humans, are true farmers. The difference is that ants are farming fungus. Entomologists Ted Schultz and Sen Brady at the Smithsonians National Museum of Natural History have published a paper in the March 24 issue of the journal Proceedings of the National Academy of Sc...

Plant gene clusters for natural products

John Innes Centre scientists have found that plants may cluster the genes needed to make defence chemicals. Their findings may provide a way to discover new natural plant products of use as drugs, herbicides or crop protectants. Using a gene cluster that makes an antifungal compound in oats as a t...

Gene's 'selective signature' aids detection of natural selection in microbial evolution

Scientists at MIT have come up with a mathematical approach for analyzing a protein simultaneously in a set of ecologically distinct species to identify occurrences of natural selection in an organisms evolution. The new method determines the selective signature of a gene, that is, the pattern...

Streams natural filters, if not overloaded

Blacksburg, Va. Streams are natural filters that help remove and transform pollutants that drain from surrounding watersheds, including excess nitrogen from human activities. Scientists know this as a result of many hours of getting their hands if not dirty, at least very wet -- monitoring strea...
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