the conversation

  • What ‘Brain Fog’ Is and What It Isn’t

    What ‘Brain Fog’ Is and What It Isn’t

    The COVID pandemic has introduced many scientific and medical terms into our everyday language. Many of us are now fluent in conversations about viral strains, PCR tests and mortality rates. “Brain fog” has joined these ranks to describe a now-familiar symptom of COVID and long COVID. But what exactly is brain fog, and is it…


  • How to Make Solar Panels Better (And Cheaper)

    How to Make Solar Panels Better (And Cheaper)

    The cost of turning sunlight into electricity has fallen more than 90% over the last decade. Solar is now the cheapest form of newly built energy generation. Job done? Not quite. Right now, solar works well at cost-competitive prices and can help us cut emissions significantly. But with less than 5% of the world’s electricity…