Newshour

Weather experts describe the developing climate system as an unprecedented event. Temperatures in the Pacific Ocean could climb more than three degrees above normal.Also in the programme: the Facebook whistleblower Frances Haugen speaks to Newshour about the legal case against Facebook's parent company for improperly collecting and using children's personal data; and dramatising the colourful life of the British economist John Maynard Keynes.(Photo: Mexico says mass bird deaths likely caused by El Nino's hotter waters. Credit: Mexican Government/Handout via Reuters)