A $100 billion G-7 plan to tackle climate change

From the BBC World Service: G-7 leaders say the pledge will offer lower-income countries a new source of infrastructure finance and an alternative to Chinese loans from the "Belt and Road" initiative. Plus, after hosting the G-7 summit, we hear about plans in Cornwall to extract lithium for electric car batteries from underground hot springs. And, WhatsApp says it will resist attempts by governments to weaken end-to-end encryption of messages.