Ethel Caterham, a 115-year-old British woman, is now the world's oldest living person following the death of Sister Inah Canabarro. Caterham attributes her longevity to avoiding arguments. Born in 1909, she's lived a life filled with travel, including a stint in India as a nanny and time spent in Hong Kong and Gibraltar with her late husband. She currently resides in a Surrey nursing home, where she celebrated her new title with a cake and tiara.

Prepared by Emily Rhodes and reviewed by editorial team.