What I Learned as a Green Barbie. A DGHI master’s student builds community through a unique problem-solving workshop for Duke graduate students. DGHI master's student Joan Kimani (second from left) and teammates Wynona Curaming (lfrom left), Maria Silva, and Aulia Sarah at the inaugural Masters Impact Challenge, where they won an award for most innovative solution. By Joan Kimani Published February 29, 2024 under Voices of DGHI Note: Joan Kimani, a first-year ...