The United Nations is warning the entire population of Saint Vincent has been left without access to clean water as a volcano continues to spew ash and hot gas over the Caribbean island nation. The U.N. says about 20,000 evacuees are in need of shelter. Cruise ships dispatched to ferry Saint Vincent residents to safety refused to pick up passengers unless they could prove they’d been vaccinated against COVID-19, and some neighboring islands said they would only take in vaccinated people.