Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New Free, Hands-On Tool Supports Sustainable Living Choices

23.02.2011
People who want to eat healthy and live sustainably have a new way to measure their impact on the environment: a Web-based tool that calculates an individual's "nitrogen footprint."

The device was created by University of Virginia environmental scientist James N. Galloway; Allison Leach, a staff research assistant at U.Va.; and colleagues from the Netherlands and the University of Maryland.

The calculator is a project of the International Nitrogen Initiative, a global network of scientists who share research and data on the nitrogen dilemma. The project was announced Feb. 19 at the annual meeting of the American Association for the Advancement of Science in Washington.

What's the nitrogen dilemma? Though some residents of the Chesapeake Bay and Gulf of Mexico likely are familiar with it, it's unknown to most Americans outside the agricultural world. For the last 30 years, Galloway and other leading scientists have been noting fish kills in coastal areas, threats to human health as a result of air and water pollution, and changes to global biodiversity and climate. This tool is one of their attempts to foster more understanding of nitrogen's role in our lives.

"Nitrogen, as any farmer knows, is essential to plant life," said Galloway, associate dean for the sciences in the College of Arts and Sciences at U.Va. and the Sidman P. Poole Professor of Environmental Sciences. "But the widespread use of synthetic nitrogen fertilizer to boost crop production has resulted in excess nitrogen coming off farms – essentially adding unwanted, unneeded fertilizer to our natural systems, with disastrous results. The combustion of fossil fuels adds even more nitrogen to our environment. It's a largely untold story."

Scientists are calling nitrogen pollution a major environmental problem that includes significant damage to air and water quality in places such as the Chesapeake Bay, where the federal government has dedicated hundreds of millions of dollars to reducing nitrogen runoff from farms and industry. Similarly, nitrogen runoff from Midwestern farms that ultimately flows into the Gulf of Mexico is largely responsible for toxic algal blooms that have suffocated coastal waters, leading to hypoxic zones, resulting in the loss of fish and shellfish.

To raise awareness, Galloway, a pioneering nitrogen scientist, organized a global team of experts to develop the footprint calculator as an educational tool – one he and his colleagues hope will both raise the profile of the nitrogen issue and galvanize people into action. By measuring what and how much you eat, as well as other factors like how you travel, the calculator shows your impact on the nitrogen cycle.

The website also makes recommendations for how to lessen your "nitrogen footprint." They are similar to other sustainable living choices: reduce airplane travel, choose renewable energy and eat less meat, particularly beef (since cattle consume massive quantities of farmed feed, which requires much fertilizer). Professors and lecturers are already using the tool in classrooms to teach students how one individual can alter – and help restore – a natural nitrogen cycle.

"Solving the nitrogen dilemma is a major challenge of our time," Leach said. "By calculating our individual impact, and taking small steps to reduce it, we can all play a part – and send a strong message to our nation's leaders that we want this issue taken seriously."

This new footprint calculator is the first in a series of research tools, known as N-Print, which Galloway and his team are developing to connect the production of nitrogen with the policies used to manage it. The team is currently creating a similar calculator for farmers and other nitrogen users, as well as a tool for policymakers that will provide regional nitrogen emission ceilings, which will show how much nitrogen can be released in these regions without major negative environmental impact.

"There are readily available solutions to reducing nitrogen pollution," Galloway said. "By connecting consumers, producers and policymakers, we can solve it."

Chemical fertilizer use and combustion engines are the main sources of nitrogen pollution. Scientists who are recording dramatic changes to ecosystems from the U.S. to China say the disruption of the naturally occurring cycle of nitrogen through ecosystems due to human activity leads the list of global tipping points and have named it a top threat to global biodiversity. It contributes to human health problems, water pollution, ozone layer depletion, smog, climate change and coastal dead zones. Nitrous oxide, created mostly from grain and meat production, is also a greenhouse gas 300 times more potent than carbon dioxide.

This project is supported by the Agouron Institute, the U.S. Environmental Protection Agency, U.Va., and the Energy Research Center of the Netherlands.

Fariss Samarrai | EurekAlert!
Further information:
http://www.virginia.edu

More articles from Health and Medicine:

nachricht Malaria Already Endemic in the Mediterranean by the Roman Period
27.07.2017 | Universität Zürich

nachricht Serious children’s infections also spreading in Switzerland
26.07.2017 | Universitätsspital Bern

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Physicists Design Ultrafocused Pulses

Physicists working with researcher Oriol Romero-Isart devised a new simple scheme to theoretically generate arbitrarily short and focused electromagnetic fields. This new tool could be used for precise sensing and in microscopy.

Microwaves, heat radiation, light and X-radiation are examples for electromagnetic waves. Many applications require to focus the electromagnetic fields to...

Im Focus: Carbon Nanotubes Turn Electrical Current into Light-emitting Quasi-particles

Strong light-matter coupling in these semiconducting tubes may hold the key to electrically pumped lasers

Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University...

Im Focus: Flexible proximity sensor creates smart surfaces

Fraunhofer IPA has developed a proximity sensor made from silicone and carbon nanotubes (CNT) which detects objects and determines their position. The materials and printing process used mean that the sensor is extremely flexible, economical and can be used for large surfaces. Industry and research partners can use and further develop this innovation straight away.

At first glance, the proximity sensor appears to be nothing special: a thin, elastic layer of silicone onto which black square surfaces are printed, but these...

Im Focus: 3-D scanning with water

3-D shape acquisition using water displacement as the shape sensor for the reconstruction of complex objects

A global team of computer scientists and engineers have developed an innovative technique that more completely reconstructs challenging 3D objects. An ancient...

Im Focus: Manipulating Electron Spins Without Loss of Information

Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.

For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

Closing the Sustainability Circle: Protection of Food with Biobased Materials

21.07.2017 | Event News

»We are bringing Additive Manufacturing to SMEs«

19.07.2017 | Event News

 
Latest News

Programming cells with computer-like logic

27.07.2017 | Life Sciences

Identified the component that allows a lethal bacteria to spread resistance to antibiotics

27.07.2017 | Life Sciences

Malaria Already Endemic in the Mediterranean by the Roman Period

27.07.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>