... 1992 (20 years ago today), at the so-called Earth Summit, the U.N. Conference on Environment and Development in Brazil, the Rio Declaration on Environment and Development was adopted. The nonbinding declaration's 27 principles include notable provisions on sustainability and precaution; specifically, Principle 1:
'Human beings are at the centre of concerns for sustainable development. They are entitled to a healthy and productive life in harmony with nature.'And Principle 15:
'In order to protect the environment, the precautionary approach shall be widely applied by States according to their capabilities. Where there are threats of serious or irreversible damage, lack of full scientific certainty shall not be used as a reason for postponing cost-effective measures to prevent environmental degradation.'
(Prior August 12 posts are here, here, here, here, and here.)