Why are scientists planting tiny forests in big cities?

● NPR • 2 June 2026 • 7:03 AM

Healthy forests help combat climate change, provide humans with drinking water and even improve mental and physical health. But it’s hard to imagine an entire forest in the middle of a big city. That’s where micro-forests come into play — public forests on a smaller scale, filled with native plants. They exist around the world, and producer Rachel Carlson went to visit the largest micro-forest in California in this encore episode. She joins host Emily Kwong to chat about what she saw. Interested in more of the science behind urban nature? Email us your question at shortwave@npr.org.Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave.

What to know about US military strikes on alleged drug boats

● NPR • 2 June 2026 • 6:18 AM

The U.S. military strikes on alleged drug boats have killed over 200 people. The attacks began in September and aim to stem drug flow, but critics question their legality and effectiveness.

Police investigate Iowa man suspected of killing 6 of his relatives and then himself

● AP • 2 June 2026 • 9:52 AM

Authorities in Iowa are investigating the fatal shootings of six people. They believe a relative, Ryan Willis McFarland, killed them before taking his own life when confronted by police Monday.