This article considers the question how knowledge of an impending ecological catastrophe is likely to impact on regulatory legitimacy and regulatory effectiveness. If the ultimate aim to safeguard meaningful human life on earth is in acute danger, this is likely to translate into zero tolerance towards non-compliance with environmental rules designed to avert catastrophe. This, in turn, will persuade regulators to employ normative technologies that do not engage with the moral reason of regulatees at all, but leave no option but to comply. In addition, regulators may turn to panoptic surveillance techniques that allow no breaches of rules to remain undetected. Finally, it is argued that if and to the extent that impending ecological catastrophe marks the end of maintaining the status quo as a plausible policy goal, regulators will be more sympathetic towards potentially apocalyptic technologies that carry greater promise for future gain than otherwise would be the case.