The use of space-based satellites to study environmental conditions on Earth is an important development in the conservation movement' s history  Environmental problems may now be observed long before they otherwise would be noticed, allowing for intervention before they reach the crisis stage
It is no wonder that environmentalists fail to consider both that spacecraft may damage the ozone layer and that this damage could be serious enough to warrant discontinuing spaceflight
People tend to ignore possible objectionable consequences of actions that support their activities.