Explanation : The United Nations Conference on
Sustainable Development, also known as
Rio 2012, Rio+20, or Earth Summit 2012
was the third international conference on
sustainable development aimed at reconciling
the economic and environmental goals of the
global community. It took place in Rio de
Janeiro, Brazil on 20-22 June 2012. It resulted
in a focused political outcome document
which contains clear and practical measures
for implementing sustainable development.