Let's get to the root of resource scarcity: population.

Less people = less resources required to sustain them while they grow from wee little babes in arms to self-actualized adults pursuing life's glories.

Alternative energy sources? YES! We still need them. Healthy and sustainable food supply? Of course! We need that too.

But - imagine if, as a species, we were more mindful of our procreation, there would be less people to have needs, therefore making less of a strain on our resources (the ones we have and the ones we have yet to develop).

This is not an advocation of population control mandates. It is a suggestion of nurturing the social systems we live in in a way that encourages (and provides the educational tools and medical support) thought out-procreation.