Humanity is getting older. But while the old outnumbering the young is one of the supreme achievements of our species, it comes with major challenges. How do we meet rising care needs at the moment the working age population shrinks? Does demographic ageing mean low growth and high deficits are here to stay?
Aaron Bastani on a crisis set to re-define societies around the world which, for the 21st century at least, is every bit as disruptive as climate change.