Many people view plastic as an environmental disaster that blights landscapes and chokes marine life. Our correspondent argues that instead we need to better understand this miracle material. To make prison work, governments need to have better strategies for managing inmates’ release (10:04). And could saying sorry harm your career (16:16)? Listen to what matters most, from global politics and business to science and technology—Subscribe to Economist Podcasts+For more information about how to access Economist Podcasts+, please visit our FAQs page or watch our video explaining how to link your account.