So far it seems the continent has weathered the pandemic well. But current numbers mask a future reckoning that is likely to have dire human and economic costs. We look into the “predatory trading” that in part explains recent, frenzied action in stockmarkets. And a surprising discovery about the plastics that sink to the oceans’ depths. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer