Podcast Transcript July 31st, 2026— Liquid air batteries, dolphins saved by plastic bottles, and an empty weekend a month

Episode Description: Dolphins fatally swim into fishing nets because the nylon is acoustically too similar to water for their echolocation to pick up. A researcher at Newcastle University wondered if attaching something that does produce an echo might change that. The dolphin-saving solution may surprise you. Ten solutions this week with Arielle and Karissa. Also […] The post Podcast Transcript July 31st, 2026— Liquid air batteries, dolphins saved by plastic bottles, and an empty weekend a month first appeared on The Optimist Daily: Making Solutions the News.