French winemakers fight freeze with fire

From the BBC World Service: As India scales back COVID-19 vaccine exports to focus on supplying its own people, Africa looks to the U.S. for additional doses. Plus, international travel to and from the U.K. could restart in May, but what restrictions will remain? And, we take you to Chablis, France, where winemakers are trying to keep their vines viable in an unusually cold freeze.