We're not running out of resources, we just mismanage the resources we have. The fact is that we waste 1/3 of the food we produce every year, which is 1.3 billion tons:http://www.fao.org/fileadmin/user_upload/ags/publications/GFL_web.pdf
We could feed the world on that many times over. Neither are we running out of land. Over 90 percent of the population lives on 10 percent of the land. The vast majority of land in the world is uninhabited. You could fit every single person on the planet into the state of Texas and give them 1000 square feet of space, leaving the rest of the world empty.
The problems we have stem from human nature, and are rooted in a fundamental lack of love for our fellow man. The overpopulation boogyman is simply a scapegoat people use to place the blame somewhere else, and it is a distraction from the real problems we face. Over 30k people die from starvation every day, a tragic figure which is rooted in the inequity of man and not a lack of resources.