Bono
Nour Elkhoudary AbuZaher
MomyHelper
Mauricio Adade
DSM Nutritional Products
Chase Adam
Watsi
Richard Adegbola
Bill & Melinda Gates Foundation
Ellen Agler
The END Fund
Max Aitken
International Finance Corporation
Ayo Ajayi
PATH
Alice Albright
GAVI Alliance
Uche Amazigo
World Health Organization
Marc Van Ameringen
Global Alliance for Improved Nutrition
Greg Asbed
Fair Food Program
Jennifer Astone
Firelight Foundation
Oral Ataniyazova
Alloysius Attah
Farmerline
David Auerbach
Sanergy
David Aylward
mHealth Alliance
Zubaida Bai
ayzh
Donna Barry
Partners In Health
Amie Batson
The World Bank
David E. Behring
Wheelchair Foundation
Yemeserach Belayneh
The David and Lucile Packard Foundation
Susan S. Bell
The William and Flora Hewlett Foundation
Peter Bell
CARE USA
Mohammed Bendaanane
Amendy Foods
Seth Berkley
International AIDS Vaccine Initiative (IAVI)
Matthew Bishop
The Economist
Mamadou Biteye
Rockefeller Foundation
Richard Blewitt
HelpAge International
David Bloom
Harvard School of Public Health & Harvard Business School -- Antares