Can we feed everyone?

What do you think, do we need more land to feed the fast-increasing population? I do not. But of course, I could be wrong. My view is that we have not utilized well the land we have. We have misused it, battered it, and probably out of ignorance. We did not know much. If we believed in a superpower, we just assumed it will always provide. Or we just thought of ourselves and our surroundings and so long as that was ok, there would be no problem.