Somebody should do something about it but I feel like it is already too late... What can we do anyway? Erase like 5+ billion people? That would be very good tbh but I don't see it happening. The most intelligent human being on earth, Bill Gates has been doing researches on the subject but he couldn't solve it neither.
If Gates can't fix it, nobody can. Pray for Gates.
Education fixes everything
The fertility rate in South America and Asia has dropped just around, in a few cases below the replacement rate, Africa is just a decade or two behind but it will soon stop growing like this pretty soon as the spread of information is far faster than in the '60s and it's far easier to educate people now with a laptop and wifi rather than going through 100 km of the jungle without a proper map, road and on top of that search for volunteers to risk their lives in yet half unknown territory.
And btw,
China population might go down next year, which combined with other countries starting to experiment the same will also counter the growth elsewhere.
But, the main thing is that 1/3 of the world still relies on manual labor, and around 10% on animal-assisted farming from horses to buffaloes. Investment in these parts and modern technology could help us produce food for around 14 billion people, now we could theoretically feed 9 but due to waste, we're here!
On the contrary. If it comes to a global food shortage, countries will be less willing to help other countries simply because "global" food shortage means that whole world is affected by it and not only a specific region like it usually is. With that being said, I don't expect a global food crisis. Sure, some regions will be affected for sure ( mainly the poorer ones, as always) but I don't expect more developed parts of the worlds to have big issues.
I wonder who still believes that fairytale about people coming together when at the first sign of panic a lot of countries have banned food exports to protect their own, in case of a famine happening money will dictate everything, the ones that can afford to pay one cent more will get their loaf of bread the ones who can't have any other hope than somebody who can pay will donate that food to them and not to somebody else.