Imperfect call: Trump’s exoneration

A predictable outcome in President Donald Trump’s Senate trial will have unpredictable effects on executive power and congressional oversight—but probably not on November’s elections. A staggering map of neural connections opens a new frontier in brain science. And the entirely preventable plague of locusts munching through east Africa. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/radiooffer