Long-simmering tensions in the oil-rich west of the country have boiled over, and now there’s an increasingly credible push for secession. Investors are gobbling up startups that turn reams of climate data into better climate-risk predictions. And the lessons to be drawn from Sweden’s vast crop of billionaires. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/radiooffer
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