“When you have the kind of grief I felt, you might grow around it, like a tree grows around a rock. But you never, ever lose it.” When Wendo Aszed’s best friend died from meningitis after testing positive for HIV, she knew she wanted to save others from the same fate. In 2009, she quit her financially secure job at a bank to start an organization, @dandelionafrica, to provide quality and accessible healthcare to communities in rural Kenya. Learn more at gatesnotes.com.