Aiming for the broadest and fullest reparation of environmental damage, the idea of applying the principle of retroactivity to environmental damage that occurred in the past is defended. There is no legal provision in Brazilian legislation for its application. However, the idea of retroactivity is defended since, despite the fact that the conduct took place in the past, the harmful effects are present, and someone must be held responsible to stop and repair the damage. Likewise, in view of the peculiarity of environmental damage, the issue of future environmental damage is studied here and how case law deals with the matter, always aiming for the broadest environmental protection.