India's system that distributes food to the poor has broken down due to Covid-19, and millions have trouble finding food.

Covid-19 was the trigger, but the underlying cause is population growth. It is possible to reform systems so as to waste less food — but that is easier said than done. Also, if population continues to grow, it will require repeated increases in efficiency, which tend to become ever more of a challenge.

As for putting more land into production, India has already done too much of that.