Vital Signs

A volunteer surgeon remembers running from one person to the next in the hospitals of rebel-held Syria. Also, two friends in New York, preparing to visit the Dominican Republic, study up on Zika; a man in Boston attempts to get insulin to his brother in Venezuela; a woman looks through a telescope and sees something that looks a lot like a UFO, and a former prisoner plans to open his own eye glass shop.

Plus, we hear from two winners of First Lady Michelle Obama’s kids only Healthy Lunchtime Challenge.

(Photo: Syrians evacuate an injured man following an air strike on the rebel held neighbourhood of al-Qatarji, Aleppo. Credit: Ameer Alhalbi/AFP/Getty Images)