The World Summit on Sustainable Development (2002), where 190 countries pledged their commitment to achieve a significant reduction in the current rate of biodiversity loss, was held in:

Step-by-step solution

The historic Convention on Biological Diversity (The Earth Summit) was held in Rio de Janeiro in 1992. The World Summit on Sustainable Development was held in 2002 in Johannesburg, South Africa, where 190 countries pledged their commitment to achieve a significant reduction in the current rate of biodiversity loss at global, regional, and local levels by 2010. Answer: Johannesburg, South Africa