Zacarias Zicai is the Mozambique country director of global disability and development organization Light for the World International. Zicai has led Light for the World’s emergency outreach following Cyclone Idai in 2019 and during the ongoing pandemic, focusing on ensuring people with disabilities are included in the aid response by humanitarian organizations.

Zach Marks is director of new products and partnerships at Tala, a mobile technology and data science company, opening up financial access for underserved people globally. Tala’s smartphone app uses alternative data to deliver instant credit and help customers build their financial identities.

Zach Theiler is a Washington D.C.-based journalist and communications consultant. He covers development governance and finance with a focus on national security policy, and his work has been featured in The New Humanitarian. Previously he led communications for NGOs in Washington D.C., East Africa, and the Caucuses.

Zacharia Kafuko is a molecular biochemist and an Arizona State University Mandela Washington fellow. He is the director of 1Day Africa, which focuses on global vaccine equity and the integration of low- and middle-income countries into modern medical research.

Zachary Burton is a researcher at Stanford University. His past work included global development management advisory in Chennai, India, with the Stanford Institute for Innovation in Developing Economies and the Impact Management Project, and as board advisor to U.S.-based nonprofit Bring Change to Mind and Bangalore-based science education NGO SSERD. He co-founded and leads The Manic Monologues Foundation, an organization dedicated to eradicating the stigma surrounding mental health conditions.

Zachary Katz is the vice president of essential medicines at Clinton Health Access Initiative, leading work on access to oxygen therapy to drastically reduce over 825,000 hypoxemia-related deaths annually. His team is also focused on improving care and treatment for diarrhea and pneumonia, which are among the leading causes of mortality for children under 5.

Zafrir Asaf is an impact economy and international development activist and businessperson. He has been supporting impactful and complex projects in three continents for over a decade and has worked with governments, development finance institutions, and the private sector to identify innovative solutions toward achieving the Sustainable Development Goals. He is a long-distance trail runner and a volleyball player.

Zahra Zeinali is a medical doctor from Iran with further training in public health focused on health systems, gender, and health equity from Johns Hopkins School of Public Health. She is a researcher with Global Health 50/50 and a fellow with the Rockefeller Foundation-Boston University 3-D Commission on Determinants of Health, Data, and Decision-making.

Zainab Mohammed is a public health expert who works at the Clinton Health Access Initiative in Nigeria. She enjoys spending quality time with her family and doing charitable work to support vulnerable people.

Zainab Salbi is the founder of Women for Women International and is on the board of directors of the Vital Voices Global Partnership. She is a celebrated humanitarian, author, and journalist. Salbi is co-founder for DaughtersforEarth.com, chief awareness officer at FindCenter.com, and host of Redefined podcast. Oprah Winfrey identified her as one of the 25 women changing the world to People magazine, and Foreign Policy magazine called her one of “100 Top Global Thinkers.”