Erewhon’s “Activated Smoothie” contains alt-milks and maca powder, a superfood that promises to do a lot of vague-sounding things. At $20, it is not the priciest drink you can buy at the rarefied Los Angeles mini-chain, a favourite of celebrities and beautiful young people interested in spending an exorbitant amount of money on groceries. What’s Erewhon’s secret ingredient?

And this Valentine’s Day, one evolutionary biologist is sounding the alarm: humankind is facing an “intimacy crisis”. There is a mismatch between the online world in which many people seek love today and the physical one our brains have evolved for. Two recent books offer insights into modern intimacy.

1.4m, the number of Jeffrey Epstein-related emails processed by a group of software engineers for Jmail.world, a website. Read The Economist’s analysis of Epstein’s network.