India, Nov. 16 -- Dr Tolullah (Tolu) Oni treats cities as her patient. Herlinde Koelbl, the renowned German photographer who created Fascination of Science, a photo art project featuring 60 internationally renowned scientists, including Nobel Prize winners and supported by Siemens, captured something essential about Dr Oni's journey. Talking about why Oni studied science, Koelbl noted that as a doctor, Oni felt she could help only one person or a few, but she wanted to look at the bigger picture and turned to urban health.

Born in Lagos, Dr Oni is a pan-African British public health physician and urban epidemiologist. She's a Clinical Professor of Global Public Health and Sustainable Development at the University of Cambridge and Founder...