Sunday on PBS News Weekend, concerns grow over global food security as the wartime deal allowing Ukraine to export grain is on the verge of expiring. Then, as wildfire smoke affects more people across the country, we look at the consequences for the millions without easy access to a respiratory specialist. Plus, an artist gives her Brief But Spectacular take on telling the stories of New York City's unclaimed dead. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
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