Donald Trump is continuing to build a controversial administration, having picked vaccine sceptic and former independent presidential candidate Robert F Kennedy Jr as his health secretary. Kennedy, commonly known by his initials RFK Jr, has a history of spreading health information that scientists say is false. We hear from a senior adviser to the Trump 2024 election campaign, as well as a former CDC director with serious concerns about the choice. Also on the programme: the latest from the UN climate talks in Azerbaijan, as well as the remarkable discovery of a pre-historic ecosystem in the Italian Alps. (Picture: Robert F. Kennedy Jr. attends the America First Policy Institute gala at Mar-A-Lago in Florida Credit: REUTERS/Carlos Barria)