Artificial Intelligence has gained ground so fast that OpenAI, the firm powering ChatGPT, is changing Silicon Valley’s investment model and how it innovates. Why the global nuclear order may be in peril (10:24). And an alternative type of electoral forecasting is gaining ground: political astrology (19:02). 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.

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