for the pbs newshour, i'm colin cosier in nairobi, kenya. >> woodruff: the nation's opioid crisis. president trump addressed the issue today with a team of advisors meeting in new jersey. it's a problem touching all corners of the country. as the mayor of nashville, tennessee, megan barry has dealt with an increase in the number of overdose deaths in her city. last month, it took a very personal turn. lisa desjardins has more. >> desjardins: mayor megan barry's 22-year old son max died after an apparent overdose. she spoke about her son's death publicly for the first time yesterday when she returned to work. she's encouraging families to have frank conversations about addiction. and mayor barry joins me now. thank you for joining us and our very sincere condolences for your loss. >> lisa, thank you. >> this open owed epidemic is so often told in statistics, but i'd rather hear about your son. can you tell us about him? >> sure. max was a wonderful kid. he was full of energy. he just grng waited from the university of puget sound and was looking forward to the rest of his life. you'