Elon Musk looks set to step down as Twitter CEO, following results of a poll he conducted on the platform. Also in Twitter news, it’s banning users from linking to Facebook, Instagram and other rival platforms. A ‘historic’ deal to protect nature has been agreed at the UN biodiversity summit, COP 15.

Also in this episode: 

• UK's cancer death rate has fallen 16% in last 20 years
• China’s top epidemiologist says the country will face three Covid waves this winter
• Insurers shun FTX-linked crypto firms
• MPs report finds hydrogen is ‘not a panacea for reaching net zero’
• UK’s cold snap comes to an end… but we might now have other problems