Woman, 85, endured "agonising" wait, with paramedics warning problems likely to worsen.
A palace aide steps down over remarks made to Ngozi Fulani at a reception hosted by the Queen Consort.
Prince William and Catherine arrive in the US ahead of the Earthshot Prize award ceremony.
Little Simz and Knucks tie for the main prize, while Craig David wins outstanding contribution.
Batteries thrown into household rubbish bins cause about 700 fires a year in waste facilities, a survey suggests.