Source: The Straits TimesPop star Rihanna has given US$1.75 million (S$2.1 million) to a hospital in her Caribbean homeland of Barbados in memory of her late grandmother. Rihanna says the donation to buy three pieces of medical equipment was her way of "giving back to Barbados." She made the comments during a Saturday ceremony with relatives at the island's Queen Elizabeth Hospital. The hospital's radiotherapy unit has been renamed the Clara Braithwaite Center for Oncology and Nuclear Medicine after Rihanna's grandmother, who died in June. Rihanna recently released Unapologetic, her seventh album in seven years.