A street medic patch marks a first aid kit at a UMedics workshop in Chicago's Bronzeville neighborhood. The group trains everyday people to care for shooting victims, control a chaotic scene and talk to cops and paramedics.
The UNAIDS annual report warns that Trump-era HIV funding cuts could lead to 6 million more infections and 4 million deaths by 2029 — as low-income countries struggle to fill the gap.
Emily Kwong and Regina Barber of NPR's Short Wave talk about a comet visiting from interstellar space, caterpillars that eat and break down plastic, and how animals' sense of smell varies by altitude.