technology

Jelly rolls and coking drums: a bottom-up look at batteries 🔋

Jelly rolls and coking drums: a bottom-up look at batteries 🔋

I’ve spent a lot of the past few months thinking about batteries, which turn out to be one of the most fascinating topics in modern economics. Here’s a film I’ve made for Sky News about it. Please do watch it! The main problem I had while researching

Notes, railways and bitcoins

Notes, railways and bitcoins

Is it only a matter of time before central banks nationalise cryptocurrency? I ask the question because if you look back through history it feels like one plausible chain of events. And for a long time when people asked me about the long term fate of things like Bitcoin I’