Not this ** again. Ignore the doomsayers, there is no crisis. Falling birthrates is a good thing. Living in a world of dwindling finite resources is, in fact, a huge problem. We can only engineer our way out of problems for so long. Feeding 8 bullion people? Because we enrich the soul with nitrogen and phosphorus, but we can't keep that up forever. Eventually soil erosion will limit it food supply. What happens when the oil runs out? Wind and solar aren't replacing it quickly enough. Whether the author likes it or not, climate change is still getting worse and we're not doing enough to stop global warming.
There's not enough young people to care for the elderly? How about we take some of the millions of young people working bullshit jobs, and put them to work taking care of the elderly? Or fixing our crippling infrastructure? Or providing a quality education to the children we do have? Can we really not spare some of the young people working in sales and advertising? No, clearly it's far more important to have our young people working in the new Starbucks. Sorry if no one is around when your grandma falls over and breaks her hip, but I really need my pumpkin spice latte.
There is no birthrate crisis, only horribly misaligned economic incentives.