Dr. Stephen L. Cochi is the senior adviser to the director of the Centers for Disease Control and Prevention’s Global Immunization Division. He has spent 33 years at CDC working in the field of immunization and from 1985 to present, he served in various roles at CDC where he led and managed the U.S. immunization program and its international activities.

Steve Crabtree is a senior editor and research analyst at Gallup. Since joining the company in 1993, Steve has written and edited hundreds of reports and articles on every aspect of the company's business, from polling research to management consulting. Since the Gallup World Poll was launched in 2005, he has focused on analyzing and reporting on international survey results.

Steve Cumming is associate director of secondary education and TVET at Mastercard Foundation, where he leads a team focused on youth and skill development. Over the past seven years at Mastercard Foundation, Steve has developed a portfolio of youth economic development and workforce programs for young people, including most recently, Hanga Ahazaza, an initiative focused on tourism and hospitality training for young people in Rwanda.

As president and CEO of PATH, Steve Davis combines his extensive experience as a technology business leader, global health advocate, and social innovator to lead PATH's work to accelerate lifesaving ideas and bring new health solutions to scale. PATH and our partners reach an average of 150 million people per year with innovative technologies and approaches that improve health and save lives.

Stephen W. Green is vice president of policy, government and public affairs for Chevron Corp., a position he has held since 2011. He is responsible for U.S. and international government relations, all aspects of communications, and the company’s worldwide efforts to protect and enhance its reputation.

Steve Hamill is co-author of The Tobacco Atlas and vice president for policy advocacy and communication at Vital Strategies. Hamill oversees external affairs and heads a global team working to improve health in 60 countries. He has 25 years of experience in civil society and government with a focus on strategic communication, advocacy, design, and digital communication. He is bringing this expertise to bear on global health issues including tobacco control, overdose prevention, environmental health, healthy food policy, and other leading health areas.

Steve Hamilton is a senior manager at Deloitte Advisory LLP in the Emerging Markets Practice based in Washington, D.C. Steve has more than 10 years of experience providing market, economic, strategic planning, and transactions support for large-scale infrastructure projects worldwide, including cities, special economic zones, ports and airports. He has worked in 17 countries in Africa, Asia, the Middle East, Latin America, as well as the United States and Mexico, for multilateral development banks, public and commercial clients. For Deloitte, Steve is focused on urban development and SMART cities, including developing and deploying new evidence-based approaches that support informed decision making by city leaders, citizens, and stakeholders. He is currently leading a SMART Border connected cities project on the U.S.-Mexico border and a project in Morocco that seeks to implement a new industrial land development and governance strategy for the country.

Steve Hellen has nearly 20 years of IT experience. He joined Catholic Relief Services in 2012 and leads the agency’s ICT4D and GIS practice. In 2016 he led an update of CRS’ ICT4D strategy to focus on data analytics, scale and enabling programs and partners.

Steve Hollingworth is president of Freedom from Hunger since September 2011. Prior to joining the organization, Hollingworth spent 26 years with CARE, most recently as COO. He has also held senior field positions in Asia (India, Sri Lanka and Bangladesh), Africa (Lesotho) and Latin America (Bolivia).

Steven Krolak is a writer, editor and strategic communications specialist based in upstate New York. He has written on environment and development topics for more than two decades, collaborating with The Cousteau Society, Ocean Futures, Conservation International, Fairtrade International, Worldwide Fund for Nature, The Critical Ecosystem Partnership Fund and others, in addition to bringing topics in ecology, inclusive business and capacity building to mainstream and trade audiences through his freelance reporting.