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Human reproductive rates follow biological scaling rules
In nations with high per capita energy consumption, women have fewer children. This phenomenon is an unexpected consequence of the biological scaling relationship between metabolism and reproductive rate: larger species of mammals have higher metabolism but lower birth rates. In the April 2003... view more (2003-04-08)

Do moles provide the answer for cost effective drainage?
Cranfield University's Centre for Sports Surfaces, together with TurfTrax Ground Management Systems Ltd, has won a £62.5K research grant from the Football Foundation to undertake research into alternative pitch drainage methods for winter sports pitches on heavy clay soils. The research,... view more (2004-08-19)

ORNL study finds rivers play part in removing nitrogen
Tiny organisms play a powerful role in removing nitrate, a form of nitrogen pollution caused by human activity, in streams, according to a study by a team led by Oak Ridge National Laboratory and published in Nature.   view more (2008-03-13)

Are existing large-scale simulations of water dynamics wrong?
Soils are complicated porous media that are highly relevant for the sustainable use of water resources.   view more (2008-03-11)

Soybean varieties viable in southern Indiana, resistant to root-knot nematode
Purdue University researchers have identified several soybean varieties that grow well in areas of the Midwest like southern Indiana and are resistant to root-knot nematodes, a plant-destroying parasite with a recently confirmed presence in that part of the state.   view more (2008-03-24)

NOAA and Louisiana scientists predict largest Gulf of Mexico 'dead zone' on record
NOAA-supported scientists from the Louisiana Universities Marine Consortium and Louisiana State University are forecasting that the "dead zone" off the coast of Louisiana and Texas in the Gulf of Mexico this summer could be the largest on record.   view more (2008-07-16)

Emergency contraception fails to halt abortions
Easy availability of emergency contraception does not have a notable effect on rates of pregnancy and abortion, according to an editorial in this week's BMJ.   view more (2006-09-15)

Wastewater from the canning industry is not harmful to the agricultural soil
Irrigation with wastewater from the canning industry is not harmful to the quality of agricultural soil and may even, in some cases, improve it. This is the conclusion of Iñigo Abdón Virto Quecedo in his PhD thesis defended at the Public University of Navarre.   view more (2004-12-22)

Researchers use dirt to stay one step ahead of antibiotic resistance
Dirt may be a key to how bacteria that infect humans develop a resistance to antibiotic drugs.   view more (2006-01-20)

Screening reduces mastectomy rates
The introduction of breast screening has brought about a reduction in mastectomy rates, despite recent suggestions that screening increases the number of mastectomies as a result of overdiagnosis, say researchers in this week's BMJ. Between 1990 and 1996, over 59,000 women aged 50-69 years were... view more (2002-08-21)

UCR chemists prepare molecules that accelerate chemical reactions for manufacturing drugs
Chemists at the University of California, Riverside have synthesized a new class of carbenes - molecules that have unusual carbon atoms - that is expected to have wide applications in the pharmaceutical industry, ultimately resulting in a reduction in the price of drugs.   view more (2005-08-22)

Soil Passage Drinking Water Purification
Soil passage of surface water for drinking water production is effective enough in the removal of viruses. This is one of the conclusions of the research project of Jack Schijven. He hopes to earn his PhD on Monday 2 April at TU Delft. An example of soil passage is dune filtration. “The new... view more (2001-03-30)

Deaths after fracture have not declined in 20 years
Death rates among elderly people after fracturing a thigh bone (neck of femur) have not declined appreciably during the past 20 years, finds a study in this week’s BMJ.   view more (2003-10-01)

DOE JGI sequences, releases genome of symbiotic tree fungus
The DNA sequence of Laccaria bicolor, a fungus that forms a beneficial symbiosis with trees and inhabits one of the most ecologically and commercially important microbial niches in North American and Eurasian forests, has been determined by the U.S. Department of Energy DOE Joint Genome Institute... view more (2006-07-25)

Fresh produce - Potential Risk for Consumers
Vegetables are good examples of minimally processed foods with high risk of contamination and therefore good hygienic measures have to be taken during the production from farm to table. The nature and extent of the health hazards involved in the production and preparation of foods will be... view more (2003-05-29)

International team of scientists discover clue to delay of life on Earth
Scientists from around the world have reconstructed changes in Earth's ancient ocean chemistry during a broad sweep of geological time, from about 2.5 to 0.5 billion years ago.   view more (2008-03-27)

Limited Biofuel Feedstock Supply?
The United States has embarked on an ambitious program to develop technology and infrastructure to economically and sustainably produce ethanol from biomass.   view more (2007-11-29)

Test finds manufactured nanoparticles don't harm soil ecology
The first published study on the environmental impact of manufactured nanoparticles on ordinary soil showed no negative effects, which is contrary to concerns voiced by some that the microscopic particles could be harmful to organisms.   view more (2007-03-23)

Antidepressants account for only 10% of fall in suicide rates among older people
The use of antidepressants is likely to account for only 10 per cent of the fall in suicide rates among middle aged and older people, suggests a large study in the Journal of Epidemiology and Community Health.   view more (2008-04-15)

Study yields mixed results on potential for pine trees to store extra carbon dioxide
Southern pines appear to grow and conserve water somewhat better in the carbon-dioxide-enriched atmosphere expected by mid-century, a Duke University study has found.   view more (2005-08-10)

Plant pathologists evaluate eco-friendly alternatives to methyl bromide
Alternatives to a powerful pesticide that was found be an ozone depletor are now being evaluated in agricultural production areas of Florida, say plant pathologists with USDA's Agricultural Research Service.   view more (2005-06-14)

Beneficial effects of no-till farming depend upon future climate change
By storing carbon in their fields through no-till farming practice, farmers can help countries meet targeted reductions in atmospheric carbon dioxide and reduce the harmful effects of global warming.   view more (2005-10-13)

Brown Scientists Say Biodiversity Is Crucial to Ecosystem Productivity
In the first experiment involving a natural environment, scientists at Brown University have shown that richer plant diversity significantly enhances an ecosystem's productivity.   view more (2008-04-25)

How plants manage calcium may reduce effects of acid rain
A new understanding of how plants manage their internal calcium levels could lead to modifying plants to avoid damage from acid rain. The pollutant disrupts calcium balance in plants by leaching significant amounts of the mineral from leaves as well as the agricultural and forest soils the plants... view more (2007-03-12)

Great Plains' historical stability vulnerable to future changes
A survey of long-term trends in population, farm income, and crop production in the agricultural Great Plains concludes that threats to society and the environment are counterbalanced by "surprising stability" and the potential for short- and medium-term sustainability.   view more (2007-10-01)
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