リオ宣言

1992年の国連環境開発会議の宣言（リオ宣言）が予防原則の元祖らしい。とりあえずメモ。

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.

RIO DECLARATION ON ENVIRONMENT AND DEVELOPMENT
http://www.unep.org/Documents/Default.asp?DocumentID=78&ArticleID=1163