About Us

Sustainable Development and Environmental Problems Require Interdisciplinary Solutions

Interdisciplinary Thinking is the Core of Our Approach


Dr. Sam Ham - Communication Psychology and International Conservation - Board of AdvisorsDr. Sam Ham – is Professor Emeritus of communication psychology and international conservation in the University of Idaho’s Department of Conservation Social Sciences. Sam’s research has focused on the role of interpretation in parks, protected areas and sustainable tourism destinations and in applying communication theory to heritage and nature-based tour guiding, travelers’ philanthropy, and other free-choice learning settings. In the past 20 years, his research on the strategic use of interpretation to enhance visitor experience and to influence visitor behavior has led to significant advances in protected area management across the globe.am has authored two of the world’s leading texts on applied interpretation, including his newest book, Interpretation—Making a Difference on Purpose and the worldwide best-seller, Environmental Interpretation—A Practical Guide for People with Big Ideas and Small Budgets, both of which have been published in four languages. He also has authored nearly 400 other publications and has presented in excess of 50 keynote addresses at professional conferences and symposia. Sam’s training in applied communication has reached more than 50,000 people across North America and in 48 other countries. He is the recipient of numerous national and international awards for his teaching and training, including the NAI Fellow Award, University of Idaho’s Excellence in Outreach Award, and the University of Idaho’s Excellence in Teaching Award, the highest honor bestowed by the university on one of its own faculty members. In 2007, he was honored by Clemson University with the William C. Everhart Award for his lifetime contributions to environmental and heritage interpretation across the world.

Mrs. Denecia Grant

Mrs. Denecia Grant – Denecia Grant is a born Trinidadian- American based Environmental Educator (EE), who is dedicated to teaching about conservation, and has a profound respect for the natural world. As an Environmental Educator she has organized substantial efforts to teach how the natural environment functions, and more particularly, how human beings can manage behavior and ecosystems to live sustainably.

At the age of 16, Denecia represented her high school at environmental conservation debates hosted by the Environmental Management Authority of Trinidad and Tobago, while writing about human dimension impacts on the environment in the school’s monthly papers. Her efforts to educate on conservation continued at the age of 18 when she was accepted into the Eastern Caribbean Institute of Agriculture and Forestry (E.C.I.A.F.) as a Forestry student. However, it was not until she conducted research and wrote her senior paper (Preliminary water quality analysis of the Guayamare River and its effects on the Caroni Swamp) that she truly understood how much of a need there was for conservation education.

Denecia’s tipping point came in 2008 when she was selected as a National Scholar of Trinidad and Tobago and given the opportunity to pursue a Bachelor of Science degree in Forestry at Southern Illinois University – Carbondale, USA. Upon the completion of her B.Sc in Forestry with a specialization in Hydrology she returned to Trinidad. Her professional journey began as an Associate Professional at the Water and Sewerage Authority of Trinidad and Tobago (W.A.S.A.), where she assisted with the initial phase of what is now a highly successful water conservation program known as “Adopt-A-River- Trinidad and Tobago”.

Denecia Grant shifted gears and steered her focus towards the Forestry Division of Trinidad and Tobago. While there she sat on the ‘National Tree Selection Committee’ and spent a great amount of her time identifying problems within the national park system through monitoring and evaluation assessments which assisted in the implementation of a more robust national park development framework for Trinidad. She founded community projects such a community-wide recycling and greening initiative while holding a critical position on the Community Management Council for the Tabaquite/ Talparo Regional Constituency.

Denecia later stood at the forefront of the first National Consumer Behavior Change Campaign at the Ministry of Legal Affairs, Trinidad and Tobago as the Environmental Coordinator. She spent this time at the Ministry presenting a nation-wide shift into living sustainably by conserving water and energy, reducing consumption and investing in the local economy.

In Michigan, she is now a well articulated speaker on consumer behavior change, conservation, water and energy consumption reduction, the benefits of greenways and creating livable communities.


Greenleaf Education Costa Rica S.A.– Non-discrimination Policy          01 Sept. 2015 

Greenleaf Education Costa Rica does not and shall not discriminate on the basis of race, color, ethnicity, religion (creed), gender, gender expression, age, national origin (ancestry), physical or mental ability, marital status, sexual orientation, or military status in any of its activities or operations. These activities include, but are not limited to, hiring and firing of staff, selection of volunteers or vendors, and provision of services. We are committed to providing an inclusive and welcoming environment for all members of our staff, clients, volunteers, members, contractors, subcontractors, vendors, consultants, and in our dealings with the general public.

Greenleaf Education Costa Rica does not discriminate in employment, recruitment, advertisements for employment, compensation, termination, upgrading, training, promotions, and other conditions of employment against any employee or applicant on the bases of race, color, ethnicity, religion (creed), gender, gender expression, age, national origin (ancestry), physical or mental ability, marital status, sexual orientation, or military status.

Steven Greenleaf leading a group of students from North American Universities on Water Policy and Environmental Problem Solving
Steven Greenleaf leading a group of students from North American Universities on Water Policy and Environmental Problem Solving

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