©Daniel Irungu/EPA/MAXPPP – epa09020417 Kenyan entrepreneur Nzambi Matee, holds paving bricks made from plastic waste at her factory Gjenge Makers in Nairobi industrial area, Kenya, 04 February 2021 (issued 18 February 2021). Gjenge Makers is a social enterprise whose aim is to address the need for sustainable and affordable alternative construction materials by mixing recycled plastic waste with sand to form a mixture which they melt to produce paving bricks, paving tiles and manhole covers. Nzambi was named the United Nations Environment Programme’s (UNEP) Young Champions of the Earth 2020 Africa winner. EPA-EFE/Daniel Irungu