The World Tonight

Blood tests have revealed that people living near a factory in Lancashire have higher levels of a so-called "forever chemical" that was once used at the site. PFOA was previously used in the manufacture of non-stick saucepans at the plant in Thornton-Cleveleys. We hear from a resident who received blood tests results today. Also on the programme: Chinese leader Xi Jinping touches down in Washington; and the Welsh words and phrases earning their place in the Oxford English Dictionary.