John Field

Curriculum Vitae

JOHN L. FIELD
Natural Resource Ecology Laboratory
Campus Delivery 1499
Colorado State University
Fort Collins, CO 80523
john.L.field@colostate.edu

Education

August 2015    Ph.D., Mechanical Engineering
Colorado State University, Fort Collins, CO                                                  (GPA 3.9)

Dissertation Towards the Systematic Identification of Low-Cost Ecosystem-Mediated Carbon Sequestration Opportunities in Bioenergy Supply Chains supervised by Drs. Bryan Willson (Mech. Engr.) and Keith Paustian (Soil and Crop Sci.)
NSF IGERT Fellow, Multidisciplinary Approaches to Sustainable BioEnergy program

May 2005        B.Sc., Fluid & Thermal Engineering
Case Western Reserve University, Cleveland, OH                                       (GPA 3.5)
CWRU Trustee’s Scholarship recipient

PROFESSIONAL EXPERIENCE

2015-present   Research Scientist I, Natural Resource Ecology Laboratory, Colorado State Univ. Fort Collins, CO.  Lifecycle assessment research and project management on the BANR project (see below), development of research proposals to NSF & USDA

2014-present   Project Manager, Bioenergy Alliance Network of the Rockies (BANR), Colorado State Univ. Fort Collins, CO.  Leadership role in a large industry/agency/academic research consortium, with responsibilities including stakeholder engagement, project planning, and internal and external project communications.  Participant in ecosystem modeling and lifecycle assessment project research activities.

2009-2015       Research Assistant, Natural Resource Ecology Laboratory, Colorado State Univ. Fort Collins, CO.  Helped coordinate a 4-year USDA-awarded bioenergy sustainability project integrating biogeochemical modeling results into a lifecycle assessment and decision support system.

2008-2009       Graduate Teaching Assistant, Dept. of Mech. Engr., Colorado State Univ., Fort Collins, CO.  Assisted with the capstone senior design course, supervising five teams pursuing year-long projects in alternative energy or environmental pollution assessment.

2005-2008       Mechanical Engineer II, Protonex LLC, Broomfield, CO.  Development of testing facilities and protocols for solid oxide fuel cell (SOFC) stacks, and balance of plant hardware for portable direct methanol fuel cell (DMFC) systems.

RESEARCH INTERESTS

Carbon-negative bioenergy systems

  • modeling ecosystem-mediated carbon sequestration
  • distributed biochar production
  • trade-offs between bioenergy production and ecosystem carbon storages

Bioenergy landscape design

  • marginal land identification & characterization
  • landscape optimization & economic-ecological tradeoffs

Methodological issues in bioenergy lifecycle assessment

  • methods for time dependent biogenic carbon accounting
  • ecosystem ecology & LCA scoping

DIGITAL SKILLS and EXPERIENCE

Computing skills:  My research has included a strong emphasis on automation of ecosystem model execution, results analysis, and visualization to facilitate robust model parameterization, landscape-scale analysis, repeatability, and transparency/archiving.

  • Python programming language, including matplotlib for figure generation, and scipy and numpy for analysis
  • Databases (SQLite)
  • Version control (SVN, GitHub)

Social media experience:  I have had the opportunity to through my participation in the MASBionergy IGERT program, the BANR project, and the SoGES Sustainability Leadership Fellows program to develop the following social media experience:

RESEARCH PROJECTS LED

2017    Managing a subcontract ($150,000) made through the Stanford Global Climate & Energy Project (GCEP) funded project “Sustainable Transportation Energy with Net Negative Carbon Emissions” led by collaborators at Princeton University and the University of Minnesota.

2016    Led a successful competitive proposal ($499,000 award) to the USDA-NIFA Foundational Program, Bioenergy, Natural Resources, and Environment (BNRE) program area with collaborators at University of California, Berkeley and USDA Agricultural Research Service.  Serving as Project Direct for the project titled “Reconciling economic and biophysical perspectives on marginal land for sustainable bioenergy crop production”.

2013    Participated in a successful competitive proposal ($9,800,000 award) to the USDA National Institute of Food and Agriculture (NIFA) Coordinated Agricultural Project program in collaboration with Cool Planet Energy Systems and partners at the US Forest Service and four other western universities, resulting in the funding of the Bioenergy Alliance Network of the Rockies.  Participated heavily in initial project planning, and played a prominent role in developing the lifecycle assessment task work plan and crafting and editing the overall proposal narrative.  Now serving as Project Manager.

OTHER RESEARCH PROPOSALS

2017    Participated in an unsuccessful proposal to the NSF Innovations at the Nexus of Food, Energy, and Water Systems (INFEWS) program with collaborators at Princeton University and Climate Central.  Participated heavily in proposal concept development, planning, and preparation; listed as principle investigator.

2016    Participated in a successful proposal to the US DoE Bioenergy Research Center program led by collaborators at Oak Ride National Laboratory and the National Renewable Energy Laboratory.  Participated heavily in concept development, planning, and preparation of the ‘Sustainability’ section; listed as principle investigator.

2015    Participated in an unsuccessful proposal to the DoE Bioenergy Technology Office (BETO) Landscape Design program with collaborators at Abengoa, the National Renewable Energy Laboratory, Idaho National Laboratory, and others.  Participated heavily in proposal concept development, planning, and preparation; listed as both a project researcher and data co-manager.

2015    Participated in an unsuccessful proposal to the Environmental Research and Education Foundation (EREF) Research in Sustainable Solid Waste Management funding area in conjunction with the CSU Institute for the Built Environment and the City of Fort Collins.  Participated in concept development and contributed both text to and reviews of the final proposal.

2013    Participated in an unsuccessful proposal to the USAID Powering Ag: An Energy Grand Challenge program with partners from the CSU Center for Advancement of Sustainable Enterprise and Powerhouse Energy Institute, International Rice Research Institute, and others.  Played a leading role in development of the research plan, and charged with managing and compiling contributions of the various collaborators into the final proposal narrative.

SERVICE

Reviewer for the following journals :
Applied Energy
Applied Engineering in Agriculture
BioResources
Ecological Applications
Ecological Engineering
Electronic Journal of Energy & Environment
Environmental Research
Environmental Science & Technology (x3)
Global Change Biology
Global Change Biology- Bioenergy (x4)
Philippine Journal of Science

Proposal review and panel service:
USDA-NIFA
Sun Grant Initiative

BIOENERGY INDUSTRY COLLABORATIONS

2015-present   Confluence Energy, Kremmling, Colorado.  Collaboration through the BANR project including site visits and lifecycle assessment study development.

2015                  Abengoa Biomass and Bioenergy of Kansas, St. Louis, Missouri.  Proposal development.

2013-present   Cool Planet Energy Systems, Denver, Colorado.  Collaboration through the BANR project including proposal development, site visits, and lifecycle assessment study development.

2012-2013       Shell Oil Company, Houston, Texas.  Coordination on development of spatial ecosystem modeling tools and resources.

2010                SME Renewables, Phnom Penh, Cambodia.  Collaboration through the BIOCHARM project including site visits and lifecycle assessment study development.

PUBLIC TESTIMONY

2016    Testimony before the Colorado Legislature regarding bill 16-007, Concerning the Establishment of a Multiplier in the Renewable Energy Standard for Electricity Generated from Certain Types of Biomass to Provide an Incentive to Use Materials Located Within Areas that Have a High Risk of Wildfire.

  • Testimony before the Colorado State Senate Agriculture, Natural Resources, & Energy subcommittee (February 23, 2016)
  • Testimony before the Colorado House of Representatives Transportation & Energy subcommittee (March 9, 2016)

AWARDS and HONORS

2015    Sustainability Leadership Fellowship through the CSU School of Global Environmental Sustainability (SoGES)

2012    Outstanding Graduate Research Award, American Society of Agronomy (ASA) Environmental Quality Section: Biochar Community

2012    Co-author on a winning poster in the 2012 Online IGERT Video and Poster Competition

2011    NSF-IGERT scholarship to present a paper at the 12th International Conference on Indoor Air Quality and Climate in Austin, TX

2011    C2B2-Chevron Graduate Fellowship, Colorado Center for Biofuels and Biorefining

2010    NSF and CSU Sustainable Biofuel Development Center (SBDC) travel Fellowships for training at the International Rice Research Institute, Los Banos, Philippines and associated fieldwork in Battambang, Cambodia

TEACHING and MENTORING

Pursuing a Graduate Teaching Certificate through The Institute for Learning and Teaching (TILT) at CSU, including coursework on teaching techniques and pedagogy and the publication of a digital teaching portfolio. Teaching experiences include:

College of Agriculture
Introduction to Bioenergy Technology (AGRI 601). Participation as a lab coordinator and/or instructor from 2011-present, including two years as an instructor of record. Topics include lifecycle assessment and the GREET LCA software

Bioenergy Policy, Economic, and Environmental Assessment (AGRI 602). Participation as a lab coordinator and/or instructor from 2011-present, including two years as an instructor of record. Topics include biogeochemistry, climate impact assessment, the DayCent model, and coordination of a semester-long bioenergy integrated assessment project.

Department of Ecosystem Science & Sustainability
Foundations for Carbon/Greenhouse Gas Management (ESS 524). Guest lecturer

School of Global Environmental Sustainability
The Science and Context of Sustainable Energy (GES 180). Guest lecturer

Applications in Environmental Sustainability (GES 470). Guest lecturer

Department of Mechanical Engineering
Energy Engineering (MECH 303). Guest lecturer

Engineering Design Practicum (MECH 486). Teaching assistant, 2008-2009

Dept. Soil & Crop
Science Soils and Global Changes: Science and Impacts (SOCR 400). Guest lecturer (x2)

Ecosystem Modeling (SOCR 680). Guest lecturer

Graduate student mentoring (informal):

  • Andrea Nocentini, PhD candidate, University of Bologna, Italy
  • Trung Nguyn, PhD candidate, Dept. Soil & Crop Science, Colorado State University

Undergraduate summer student mentoring through the Colorado Center for Biorefining and Biofuels (C2B2) and the CSU Sustainable Bioenergy Development Center (SBDC):

  • Abbie Tremblay, Clemson University (C2B2 REU, 2011)
  • Thai Dinh, Oklahoma State University (C2B2 REU, 2012)
  • Jacqui Marquez, Colorado State University (SBDC fellowship, Fall 2013 – Spring 2014)
  • Jose Milan, University of Puerto Rico (C2B2 REU, 2015)

SOCIETY MEMBERSHIPS

Agronomy Society of America, Crop Science Society of America, and Soil Science Society of America

American Geophysical Union

PUBLICATIONS

Google Scholar profile: https://goo.gl/fPU9Wr

ORCID profile: https://orcid.org/0000-0003-4451-8947

 

Field, J.L., Evans, S.G., Marx, E., Easter, M., Adler, P.R., Dinh, T., Willson, B. & Paustian, K. (in press). High resolution techno-ecological modeling of a bioenergy landscape to identify climate mitigation opportunities in cellulosic ethanol production. Nature Energy.

Nocentini, A., Field, J.L., Monti, A. & Paustian, K. (2017). Biofuel production and soil GHG emissions after land-use change to switchgrass and giant reed in the US Southeast. Food and Energy Security. DOI: 10.1002/fes3.125

Whitaker, J., Field, J.L., Davies, C., Ceulemans, R., McNamara, N., Rowe, R., Donnison, I., Cerri, C., Bernacchi, C., DeLucia, E., Taylor, G., Paustian, K., Woods, J., Smith, P. & Thornley, P. (2017).  A decade of research on bioenergy and land use change: ten things we now know, and the challenges remaining.  Global Change Biology Bioenergy. DOI: 10.1111/gcbb.12488

Field, J.L., Marx, E., Easter, M., Adler, P.R., & Paustian, K. (2016) Ecosystem model parameterization and adaptation for sustainable cellulosic biofuel landscape design. GCB Bioenergy, 8, 1106-1123. DOI: 10.1111/gcbb.12316

Field, J.L., Tanger, P., Shackley, S.J. & Haefele, S.M. (2016). Agricultural residue gasification for low-cost, low-carbon decentralized power: an empirical case study in Cambodia. Applied Energy, 177, 612-624. DOI: 10.1016/j.apenergy.2016.05.100

Field, J.L., Keske, C.M.H., Birch, G.L., DeFoort, M.W. & Cotrufo, M.F. (2013) Distributed biochar and bioenergy coproduction: a regionally specific case study of environmental benefits and economic impacts. GCB Bioenergy, 5, 177–191. DOI: 10.1111/gcbb.12032

Tanger, P., Field, J.L., Jahn, C.E., DeFoort, M.W. & Leach, J.E. (2013) Biomass for thermochemical conversion: targets and challenges. Frontiers in Plant Biotechnology, 4, 218.  DOI: 10.3389/fpls.2013.00218

Sparrevik, M., Field, J.L., Martinsen, V., Breedveld, G.D. & Cornelissen, G. (2013) Life Cycle Assessment to Evaluate the Environmental Impact of Biochar Implementation in Conservation Agriculture in Zambia. Environmental Science & Technology, 47, 1206–1215. DOI: 10.1021/es302720k

Karve, P., Prabhune, R., Shackley, S., Carter, S., Anderson, P., Sohi, S., Cross, A., Hazeldine, S., Haefele, S., Knowles, T., Field, J. & Tanger, P. (2011). Biochar for Carbon Reduction, Sustainable Agriculture ad Soil Management (BIOCHARM) (Final report No. ARCP2009-12NSY-Karve). Asia-Pacific Network for Global Change Research.

 

 

MANUSCRIPTS in PREPARATION or REVIEW

Campbell, E.E., Field, J.L., & Paustian, K. (in review). Chapter 23: Simulation Models and Data-Model Integration.  In Methods of Soil Analysis: Soil Organic Matter, edited by R.F. Turco.

Nguyen, T.H., Cook, M., Field, J.L., Khuc, Q.V., & Paustian, K. (in review).  High-resolution trade-off analysis and optimization of ecosystem services and disservices in agricultural landscapes.

Marcotullio, P.J., Gurney, K.R., McGlynn, E., Bruhwiler, L., Davis, K.J., Davis, S.J., Engel-Cox, J., Field, J.L., Gately, C., Kammen, D.M., McMahon, J., Morrow, W. & Torrie, R. (in review).  The North American Energy System: Chapter 3 of the 2nd State of the Carbon Cycle Report (SOCCR-2).

Davis, E.B., Lynd, L.R., Borsuk, M.E., Costello, C., Field, J.L., Kemanian, A., Laser, M.S., Lebauer, D., Long, S.P., Miguez, F.E., Paustian, K., Richard, T.R., Smith, P., Smithwick, E., Sheehan, J., Spaeth, K.E., Vadas, P.A., Weimer, P.J., Wilkins, J.L. & Wullschleger, S.D. (in preparation).  Greenhouse Gas Emission Reduction from Biofuels and Ecosystem Carbon Storage.

Field, J.L. & Paustian, K. (in preparation).  Climate Impact Accounting for Carbon-Negative Bioenergy.

CONFERENCE SESSIONS ORGANIZED

Field, J.L., Millar, R, Zickfeld, K & Richard, TL (2017, December 15) GC52A: Carbon Budgets for Ambitious Climate Goals and the Role of Large-Scale Carbon Negative Bioenergy/Carbon Removal in Meeting Them. Lead convener of both an oral and a poster session at the American Geophysical Union Fall Meeting, New Orleans, LA. (https://agu.confex.com/agu/fm17/meetingapp.cgi/Session/32439)

CONFERENCE PAPERS, PRESENTATIONS, and SEMINARS

Field, J.L. (2017, October 81) Bioenergy from Beetle-Kill Wood: the BANR project. Presentation at the 21st Century Energy Transition Symposium, Fort Collins, CO. (http://energytransition.colostate.edu/symposium-2017/agenda-2017/)

Field, J.L., Ogle, S. & Paustian, K. (2017, October 25) Using the DayCent Model to Estimate Soil Carbon and GHG Fluxes for Bioenergy Assessments and the Annual U.S. GHG Emissions inventory. Presentation at the Coordinating Research Council Workshop on Transportation Fuel Lifecycle Assessment, Argonne National Laboratory, IL. (https://crcao.org/workshops/LCA/LCA_10_2017/eFolder!index).html)

Paustian, K., Field, J.L. & Swan, A. (2017, October 22) Bioenergy Alliance Network of the Rockies. Presentation at the USDA-NIFA 2017 Bioeconomy and Agroecosystems Project Director’s Meeting, Tampa, FL.

Field, J.L., Zhang, Y., Adler, P. & Paustian, K. (2017, August 15) How Can Ecosystem Process Models Inform Bioenergy Assessments? Presentation at the American Society of Agronomy Crop Residues for Advanced Biofuels Workshop, Sacramento, CA. (https://www.agronomy.org/meetings/crop-residues)

Field, J.L. (2017, February 9) What Can Ecosystem Models Tell Us About Carbon-Negative Bioenergy?  Presentation in the ‘Beyond Carbon Neutral’ seminar series hosted by the University of Michigan Energy Institute, Ann Arbor, MI. (http://beyondcarbonneutral.org/2017/02/11/did-you-miss-john-fields-beyond-carbon-neutral-seminar-series-talk-catch-it-here/)

Field, J.L., Reardon, K., & Daugaard, D. (2016, October 18) Beetle-Kill to Biofuels & Biochar: Bioenergy Alliance Network of the Rockies. Presentation at the USDA-NIFA 2016 Sustainable Bioenergy and Bioproducts Project Director Meeting, New Orleans, LA.

Field, J.L. & Paustian, K. (2016, August 23) Beetle-Kill to Biochar: Good Climate Sense? Presentation at the US Biochar Initiative’s Biochar 2016 meeting, Corvallis, OR. (http://usbi2016.org/)

Field, J.L., Sheehan, J., & Paustian, K. (2016, May 4) Bioenergy Alliance Network of the Rockies: Lifecycle Assessment Overview. Presentation at the 2nd Northwest Wood-Based Biofuels + Co-Products Conference, Seattle, WA.

Field, J.L. (2015, April 28) High-Resolution Ecosystem Modeling for Bioenergy Feedstock Sustainability Assessment. Presentation in the Energy Biosciences Institute seminar series, Berkeley, CA.

Field, J.L. (2015, April 14) The Bioenergy Alliance Network of the Rockies. Presentation at the Inside Energy Spark! community event, Fort Collins, CO. (http://insideenergy.org/2015/04/17/ie-questions-what-is-spark/)

Field, J.L., Dinh, T.N., Marx, E., Easter, M. & Paustian, K.H. (2014, November 3) Ecosystem Modeling to Identify Low-Cost GHG Mitigation Opportunities in Heterogeneous Bioenergy Landscapes. Presentation at the American Society of Agronomy, Crop Science Society of America & Soil Science Society of America International Annual Meetings, Long Beach, CA.

Field, J.L., Dinh, T.N., Marx, E., Tryner, J. & Paustian, K.H. (2013, November 4) Biofuels On The Landscape: Modeling To Balance The Environmental Footprint Of Feedstock Production On Marginal Lands. Presentation at the American Society of Agronomy, Crop Science Society of America & Soil Science Society of America International Annual Meetings, Tampa, FL.

Field, J.L., Dinh, T.N., Easter, M., Marx, E., Tryner, J. & Paustian, K.H. (2013, October 14) Biofuels on the Landscape: Modeling to Balance the Environmental Footprint of Feedstock Production on Marginal Lands. Presentation at the 25th Anniversary Meeting of the Association for the Advancement of Industrial Crops, Washington DC. (https://hort.purdue.edu/newcrop/proceedings2015/)

Field, J.L., Dinh, T.N. & Paustian, K.H. (2013, February 20). Modeling for Optimal Bioenergy Landscape Design. Presentation at the 19th Annual Front Range Student Ecology Symposium, Fort Collins, CO.

Field, J.L., Dinh, T.N. & Paustian, K.H. (2012, December 7). Bioenergy Landscape Design to Minimize the Environmental Impacts of Feedstock Cultivation. Presentation at the American Geophysical Union Fall Meeting, San Francisco, CA.

Field, J.L. & Cotrufo, M.F. (2012, October 22). Liming Effects and Winter Wheat Yield Response in Biochar-Amended Agricultural Soils. Presentation at the American Society of Agronomy, Crop Science Society of America & Soil Science Society of America International Annual Meetings, Cincinnati, OH.

Field, J.L., Dinh, T.N. & Paustian, K.H. (2012, October 22). Soil Biogeochemical Modeling for Optimal GHG-Mitigating Biomass Feedstocks. Presentation at the ASA, CSSA, and SSSA International Annual Meetings, Cincinnati, OH.

Field, J.L. & Cotrufo, M.F. (2012, February 22). Biochar Amendments for Agricultural Soils: Response Mechanisms in Winter Wheat. Presentation at the 18th Annual Front Range Student Ecology Symposium, Fort Collins, CO.

Evans, S.G. & Field, J.L. (2011, June 6). A technology-specific methodology for evaluating the GHG mitigation potential of advanced improved cookstoves. Paper presentation at the 12th International Conference on Indoor Air Quality and Climate, Austin, TX.

POSTER PRESENTATIONS

Field, J.L. & Paustian, K. (2016, December 13). Beetle-Kill to Carbon-Negative Bioenergy in the Rockies: the Bioenergy Alliance Network of the Rockies (BANR). Poster at the American Geophysical Union Fall Meeting, San Francisco, CA.

Field, J.L. Adler, P.R., Evans, S.G., Marx, E., Easter, M. & Paustian, K. (2015, December 14). High-Resolution Biogeochemical Simulation Identifies Practical Opportunities for Bioenergy Landscape Intensification. Poster at the American Geophysical Union Fall Meeting, San Francisco, CA.

Field J.L. & Paustian, K. (2015, November 4) Evaluating Strategies for Low-Cost, Low-GHG Biomass Production in New Bioenergy Landscapes. Poster at the NIFA-AFRI Sustainable Bioenergy Annual Project Directors Meeting, Denver, CO.

Field J.L. & Paustian, K. (2014, October 30) A spatially-explicit web-based DSS for assessing bioenergy crop productivity and GHG footprint. Poster at the NIFA-AFRI Sustainable Bioenergy Annual Project Directors Meeting, Washington DC.

Birch, G.L., Field, J.L., Keske, C.M.H., DeFoort, M.W. & Cotrufo, M.F. (2012, December 5). A Regionally-Specific Assessment of the Carbon Abatement Potential of Biochar. Poster at the American Geophysical Union Fall Meeting, San Francisco, CA.

Field, J.L. & Paustian, K.H. (2012, October 22). Biogeochemical modeling to improve GHG abatement in bioenergy systems. Poster at the ASA, CSSA, and SSSA International Annual Meetings, Cincinnati, OH.

Campbell, E., Field, J.L. & Lohman, G.L. (2012, May 22). Taking the devil out of the details: reducing uncertainty in bioenergy production. Poster presented at the 2012 IGERT Online Video and Poster Competition.

Field, J.L., L’Orange, C.C., DeFoort, M.W. & Willson, B.D. (2012, April 16). Gasifier cookstoves:  the application of modern technologies to improve efficiency and reduce emissions in the largest bioenergy sector worldwide. Poster presented at the International Biomass Conference and Expo, Denver, CO.

Field, J.L. & Cotrufo, M.F. (2011, August 29). Biochar for soil pH amelioration and improved crop yields. Poster presented at the 242nd American Chemical Society National Meeting, Denver, CO.

Field, J.L. (2011, May 3). Sustainability assessment in biochar systems: from production to soil application. Poster presented at the 2011 IGERT Online Poster Competition.

Field, J.L. & Paustian, K.H. (2009, September 16). Bioenergy Life Cycle Assessment (LCA) on a Site-Specific Basis.  Poster at the Western Great Plains Sustainable Feedstock Development Partnership First Annual Meeting, Fort Collins, CO

WORKSHOPS

2015    “Bioenergy and Land Use Change: A Global Perspective” hosted by the Energy Technology Institute (ETI) Ecosystem Land Use Modeling (ELUM) project, Lancaster University, Untied Kingdom

2014    Global Sustainable Bioenergy Initiative (GSB) project planning meeting, Piracicaba, Sao Paulo, Brazil

2012    Biochar:Crossroads 1st International Summer School on Biochar, Leibniz-Institut für Agrartechnik, Potsdam-Bornim, Germany

2011    Biomass Supply Chain Modeling Workshop, National Renewable Energy Laboratory, Golden, CO

2011    Biomass Densification Workshop, Idaho National Laboratory, Idaho Falls, ID

2011    Rocky Mountain Biochar Initiative (RMBI) Spring Meeting, Colorado School of Mines, Golden, CO

2010    Rice: Research to Production (RR2P) Shortcourse, International Rice Research Institute (IRRI), Los Banos, Philippines

2010    MASB IGERT policy training experience, Heinz Center for Science, Economics & Environment, Washington DC

2009    Conference for Sustainability IGERTs 2 (C4SI2), Arizona State University, Tempe, AZ

2009    North American Biochar 2009, hosted by the International Biochar Initiative and the Center for Energy & Environmental Security, University of Colorado, Boulder, CO

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