About
19
Publications
1,778
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263
Citations
Citations since 2017
Introduction
Additional affiliations
March 2019 - present
Informed Sustainability Consulting
Position
- Consultant
Description
- https://www.informedsustainability.com/
November 2017 - October 2018
The Good Food Institute
Position
- Researcher
August 2015 - November 2017
Education
August 2008 - December 2013
Field of study
- Agricultural and Biological Engineering / Ecological Sciences and Engineering
August 2001 - May 2005
Publications
Publications (19)
Purpose
As knowledge grows of the potentially harmful effects of chemicals in widespread use, emerging contaminants have become a major source of concern and uncertainty for public health officials and water quality managers. Perfluorinated alkyl substances, often referred to as perfluorinated compounds, have come under recent scrutiny and are pres...
As the frequency and severity of commercial airline accidents has decreased dramatically in recent decades, the marginal benefit of new safety measures has decreased as well[1]. Meanwhile, protective equipment and practices frequently increase aircraft weight and per-trip fuel burn. This additional fuel consumption impacts not only airline operatin...
This study uses the life cycle assessment framework to compare the effects on human health and the environment of drop-in biofuels produced from switchgrass and prairie cordgrass using a variety of low-input farming methods. Biofuel scenarios were developed using experimental data from South Dakota State University's Felt Farm, pretreatment and bio...
Sustainability guidelines and regulations in the United States often focus exclusively on carbon or petroleum reductions. Though some of these policies have resulted in substantial progress toward their goals, the effects of these efforts on other social and environmental externalities are often ignored. In this study, we examine the life-cycle air...
Land availability for growing feedstocks at scale is a crucial concern for the bioenergy industry. Feedstock production on land not well-suited to growing conventional crops, or marginal land, is often promoted as ideal although there is a poor understanding of the qualities, quantity, and distribution of marginal lands in the United States. We exa...
One of the most frequently touted benefits of community gardens and the local food movement is the potential to reduce greenhouse gas emissions through local low input production. Commercially grown foods, grown as monocultures on large acreage typically require large inputs of fertilizers, water and pesticides along with long transport distances a...
Integrating farms and food-producing gardens into an urban landscape can have many benefits – not only by supplementing the food brought in from farms and feedlots worldwide, but by providing a wide range of social and environmental services. A greener city has cleaner air and water and a more moderate climate than one with more pavement. Open spac...
Incremental biomass losses during the harvest and storage of energy crops decrease the effective crop yield at the biorefinery gate. These losses can affect the environmental performance of biofuels from cellulosic feedstocks by indirectly increasing agricultural inputs per unit of fuel and increasing direct emissions of pollutants during biomass d...
Packaged samples of three bioenergy feedstocks—sweet sorghum, corn stover, and switchgrass—were stored indoors under aerobic conditions to determine the change in chemical composition, track loss of specific chemical constituents, and determine the impact of dry matter loss on saccharification yields with and without pretreatment. Biomass samples w...
Little is known about the contributions of biomass feedstock storage to the net greenhouse gas emissions from cellulosic biofuels. Direct emissions of methane and nitrous oxide during decomposition in storage may contribute substantially to the global warming potential of biofuels. In this study, laboratory-scale bales of switchgrass and corn stove...
Life cycle inventory models of greenhouse gas emissions from biofuel production have
become tightly integrated into government mandates and other policies to encourage
biofuel production. Current models do not include life cycle impacts of biomass storage or
reflect current literature on emissions from soil and biomass decomposition. In this study,...
Bill Greenough's work provides a framework for thinking about synaptogenesis not only as a key step in the initial wiring of neural systems according to a species typical plan (i.e., experience-expectant development), but also as a mechanism for storing information based an individual's unique experience over its lifetime (i.e., experience-dependen...
Data from clinical studies, cell culture, and animal models implicate the urokinase plasminogen activator (uPA)/uPA receptor
(uPAR)/plasminogen system in the development of atherosclerosis and aneurysms. However, the mechanisms through which uPA/uPAR/plasminogen
stimulate these diseases are not yet defined. We used genetically modified, atheroscler...
Data from clinical studies, cell culture, and animal models implicate the urokinase plasminogen activator (uPA)/uPA receptor (uPAR)/plasminogen system in the development of atherosclerosis and aneurysms. However, the mechanisms through which uPA/uPAR/plasminogen stimulate these diseases are not yet defined. We used genetically modified, atheroscler...
Enhanced plasminogen activation, mediated by overexpression of urokinase-type plasminogen activator (uPA), accelerates atherosclerosis in apolipoprotein E-null mice. However, the mechanisms through which uPA acts remain unclear. In addition, although elevated uPA expression can accelerate murine atherosclerosis, there is not yet any evidence that d...
Urokinase-type plasminogen activator (uPA) is expressed at elevated levels in atherosclerotic human arteries, primarily in macrophages. Plasminogen (Plg), the primary physiologic substrate of uPA, is present at significant levels in blood and interstitial fluid. Both uPA and Plg have activities that could affect atherosclerosis progression. Moreove...
Ground ryegrass (Lolium perenne L., 5300 kg C ha–1, 12 g C kg–1 (soil)) and urea were applied to a grassland soil with the same dose of nitrogen (N), 500 kg N ha–1, 1.1 g N kg–1 soil, and microbial respiration responses measured in the laboratory. Microbial respiration rate in control, ryegrass- and urea-amended soil averaged 2.1 ± 0.2, 25.0 ± 1.7...
Projects
Projects (7)
I am developing a research program investigating the relative strengths and weaknesses of meat, dairy, and egg production through conventional animal agriculture and new cellular agriculture platforms. Primary areas of interest include land use, climate change emissions, and life-cycle ecotoxicity and human health impacts. More details to follow as my work with the Good Food Institute (www.gfi.org) gets under way.
As the frequency and severity of commercial airline accidents has decreased dramatically in recent decades, the marginal benefit of new safety measures has decreased as well. Meanwhile, protective equipment and practices frequently increase aircraft weight and per-trip fuel burn. This additional fuel consumption impacts not only airline operating costs, but also represents a marginal increase in global climate change emissions. We present a new model for estimating climate-related impacts from marginal increases in fuel use. Using case studies of recent commercial airline regulations, we look at the potential impact of including climate-related health costs on the net benefit of these rules and examine the tradeoffs in risk between safety and climate change.
