Prime Minister Boris Johnson has re-allocated a number of key government posts. We ask how the changes reflect his political standing and what they mean for his agenda. A first-of-its-kind study that deliberately infected participants with the coronavirus is ending; we examine the many answers such research can provide. And the rural places aiming to capitalise on their dark skies. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer   See acast.com/privacy for privacy and opt-out information.