Lawyers from around the world promise a crackdown on developers who pollute - A panel of 127 senior judges from 62 countries admitted yesterday that many of the international laws designed to protect the environment and save species from destruction were "paper tigers" which had not been properly enforced. The panel which convened at the Johannesburg earth summit pledged to improve environmental law across the world and champion the poor in a battle for a better environment as part of their duty to defend human rights.