How could overpopulation in the world be solved?

We must inspire humanity to reduce births below a two child average. Only then will population decline – humanely. If not solved, overpopulation will overwhelm all the world's people – every one of us! Today people spend billions trying to make a more sustainable planet. read more

If the world was ever to become overpopulated, then there would be three ways to solve it: population reduction, consumption reduction, and production increase. Humanity has done, and continues to do, all three. read more

Your question seems to assume that the world is or will be overpopulated. That is a big assumption that is not well supported by the evidence. read more