UN chief calls on AI firms to 'come clean' on environmental costs

As Europe swelters under a major heatwave, the energy-intensiveness of artificial intelligence has come into the spotlight.  At a climate conference in London, UN Secretary General Antonio Guterres called on AI companies to disclose the environmental impact of their systems.  Plus, Iran rejects the US's claim that any frozen Iranian assets, once unlocked, will be controlled by the US and Qatar and be used exclusively to buy American food and medicine.