A selection of three essential articles read aloud from the latest issue of The Economist. This week, how to stop the rot in South Africa. The liberal opposition cannot win the elections on May 8th, so the president must clean up his own party. Next, why Britain’s artful compromise on Huawei and 5G is a model for other countries (10:17). And, geoengineering could alleviate climate change, but with politically explosive consequences (14:54)

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