Depopulation: An Investor's Guide to Value in the Twenty-First Century (2015) by Phillip Auerswald and Joon Yun is a semi-interesting book about a really important topic that gets far less attention than it should.
There are many books that deal with AI and how it could possibly end all our jobs. However, there is zero data that this is actually happening. AI has made ads marginally better and can recognize snapshots on Facebook. Which is amazing, but the real impact has been fairly small. However, Japan is shrinking by about the population of Canberra every year and this is the only book I've seen on this trend.
Almost every single developed country has a birth rate below replacement. The only large group of countries with high birth rates are really poor countries in Africa and once they too become richer, say approaching 10K GDP at PPP per year which they are on track to do by mid-century it's highly likely birth rates will fall there too.
This book looks at how birth rates are falling and then makes some suggestions as to where investment will be good. The author's suggest companies with good returns rather than high growth prospects.
The book has some interesting statistics and is not terrible, but it does far less than can be done with a really interesting subject. Looking at Japan and the many places where populations are declining now, such as East Germany, deserves better treatment and should be more interesting.