Dr Bernard Coetzee, who is from Wits University’s Global Change Institute, is the second winner of the $150 000 (N$2.5 million) Jennifer Ward Oppenheimer Grant, established to support a research programme that has the potential to contribute to the advancement of environmental and allied sciences and to identify and address real-world issues that affect Africa. Coetzee’s research aims to understand the impact of the use of artificial light in Africa and how it may increase vector disease transmission, including that of malaria, Zika virus, and dengue fever, and hopes to help with understanding ways to ensure the promotion of affordable and energy efficient artificial lighting technologies at the household scale that do not increase human health risks.