Primary culler: Democrats’ second debates

The fields of American presidential candidates just keep getting bigger, and party rules incentivise extreme views and dark-horse entrants. That might not be what’s best for either party. The fast-shipping arms race sparked by Amazon is radically reshaping how stuff gets around the world. And, on a visit to Shanghai’s flagship Lego store, we ask what makes the bricks so popular in China. Hosted on Acast. See acast.com/privacy for more information.