At the icy border between Russia and Estonia, the anxieties of NATO member states are clear, our correspondent reports. Leaders there have been debating defence spending and worrying about America shifting its support. Young people are seeking out spirituality on their phones (9:43). And why the iconic Californian condor is under threat (16:47).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.