Steven Giallourakis
Executive Director
Co-Founder
Steven Giallourakis is the co-founder of the Cleveland Climate Institute, where he brings together his background in applied mathematics, computer vision, and community organizing to create resilient, data-driven climate solutions. A six-time cancer survivor, Steven is deeply committed to building systems that help people and communities thrive under pressure. His research explores areas such as sensor networks, open data platforms, and mathematical tools for understanding environmental change, with a focus on making Cleveland a model for locally rooted, globally relevant climate innovation.
Tessa Rosenberger, PhD
Director Of Engineering
Co-Founder
Tessa Rosenberger is originally from Lakewood, Ohio, she is passionate about keeping Cleveland a beautiful and resilient place to live. She holds a Ph.D. in Mechanical Engineering from Cleveland State University and a Bachelor of Science in Physics from the University of Dallas. With a background in atmospheric science and energy policy, she is especially excited about helping communities prepare for the impacts of climate change through local resilience efforts. When she’s not working, you can often find her swimming in Lake Erie or hiking in the Cleveland Metroparks.
Lucas Reynolds
Director of Sustainability and Impact
Co-Founder
Lucas Reynolds is the Director of Sustainability and Impact of the Cleveland Climate Institute, originally from Wooster, Ohio, with over 15 years experience as an energy and utilities professional working in renewable energy development, resource planning and power markets. He holds an M.P.A. from Indiana University in Nonprofit Management, an M.A. in Intercultural Relations from University of the Pacific, a B.A. from Ohio University in History and is currently a Ph.D student at the School for International Training pursuing a doctorate in Sustainability. He brings a global, mission-drive perspective shaped by service as a Peace Corps Volunteer in Guatemala and an AmeriCorps VISTA in New York City. With a passion for using data analytics and research for local climate resiliency efforts and promotion of renewable energy technologies, Lucas is an advocate for the great city of Cleveland and surrounding communities. You can find Lucas riding his bike on the Towpath Trail, exploring local bookstores and record shops throughout the city.
