In this task, you are given a sentence in English and your task is to translate it into Spanish. In translation, keep the numbers and capitalization (capitalize only the first word of each sentence and name).
Q: When will those responsible at last understand that sparing resources is not something we do for fun; nor is it just a question of creating a system for its own sake or a new study group, rather it is a joint European challenge.
A: 
¿Cuándo comprenderán por fin los causantes del desastre que la protección de los recursos naturales no es una actividad de tiempo libre, no afecta a un solo sistema ni representa únicamente un nuevo sector de trabajo, sino que es un reto común europeo?