While it might appear to many to make logical sense not to reproduce, that doesn’t mean the idea is free from profound emotional impact. Can we coolly concede that the world is no longer a viable human habitat and get on with living out the rest of our lives as harmlessly as possible? I would say not, or at least not for many people. Perhaps counterintuitively, wealth and low birthrates often go together. In countries with a high standard of living and good medicine, people might have fewer children but expect more for them. They will want them to have the finest educations and to aim for the most well-respected forms of work. Life becomes about connoisseurship rather than survival—a luxury experience rather than a hard grind. One lives for oneself rather than for the family or community. It’s precisely these sorts of societies that are causing problems for the planet. It’s not poor people in Africa who are supposedly overpopulating. It’s careful, rich people with 1.87 children (or fewer) who constantly upgrade their iPhones, have nice freezers, and go on yoga retreats in the Himalayas. So, when people say that the best thing you can do for the planet is to have one less baby, it matters very much to whom this baby is born. He tells us, “Wherever women are given political control of their bodies, where they have the vote, education, appropriate medical facilities and they can read and have rights and so on, the birthrate falls—there are no exceptions to that.” And, for Attenborough, this is simply good. Fewer people equals less pollution. It’s straightforward, numerical, and surely well-meaning. Still, the first problem with it is that it lands the problem of saving the planet squarely on the shoulders of women in developing countries, as they are the ones who may currently lack access to education and birth control. The second problem is less immediately apparent but intimately connected to the first. It has to do with the effects of falling populations on societies. If things were as straightforward as David Attenborough seems to suggest, women would be given rights and contraceptives, numbers of humans would quickly decrease, less stuff would get used, and our climate and ecosystems could begin to recover. As it turns out, declining populations don’t just keep going as they are but on a smaller, more planet-friendly scale. Instead, shifting demographics can cause major social upheavals. The problem with babies isn’t the babies themselves but the things people associate with them. For instance, having a family needn’t mean owning a big “family” car. Or even any car—especially not if you live in a large town or city. It also needn’t mean living in an enormous overheated house, using a ton of nonbiodegradable disposable nappies, dressing your kids in a constant parade of new clothes, and eating meat. The problem with the extra person isn’t the person but the stuff extraneous to that person. So, maybe the “to breed or not to breed” answer sounds more like this in the end: “Less stuff, more love. Keep going.” Adapted from an excerpt from A Guide to Eco-Anxiety: How To Protect the Planet and Your Mental Health by Anouchka Grose, with permission from the publisher.