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 in the episode: energy storage technologies that sound like science fiction but are getting serious investment, India's first domestically built hydrogen train, and the garden sign that looks like a win but means your plant is struggling to survive.

Stay tuned til the end for a wonderful Emissary Shout-Out that will brighten your day!

Transcript link: https://www.optimistdaily.com/?p=1422684

If you have questions, comments, feedback, suggestions, or just want to say hi, send a message to: podcast@optimistdaily.com.

Want to be part of the Optimism Movement? Become an Emissary.

Subscribe to our FREE Daily/Weekly Newsletter and follow us on Instagram, X, and Blue Sky.

The Optimist Daily is a project of the World Business Academy.

Donate link: https://www.optimistdaily.com/donate-to-support-the-optimist-daily/?lsc=41ef528d

Theme and all original music by Marvin Lanes

Watching a tense soccer match nearly doubles cardiac event risk, and cortisol could start rising fourteen hours before kickoff. With Spain just taking the World Cup, a fair portion of the world's population has basically been running a biological experiment on itself.

Arielle and Karissa also get into the neurological reason summer keeps slipping away, an Oxford trial where eight weeks of salsa classes outperformed existing tools for depression and anxiety, and a brush swab for oral cancer that returns results in under an hour — no scalpel needed.

Stay tuned til the end for a wonderful Emissary Shout-Out that will brighten your day!

Transcript link: https://www.optimistdaily.com/?p=1422640

If you have questions, comments, feedback, suggestions, or just want to say hi, send a message to: podcast@optimistdaily.com.

Want to be part of the Optimism Movement? Become an Emissary.

Subscribe to our FREE Daily/Weekly Newsletter and follow us on Instagram, X, and Blue Sky.

The Optimist Daily is a project of the World Business Academy.

Donate link: https://www.optimistdaily.com/donate-to-support-the-optimist-daily/?lsc=41ef528d

Theme and all original music by Marvin Lanes

Greece just launched the world's first satellite constellation built specifically for wildfire detection. It can spot a fire measuring only a few feet across, a huge improvement on conventional satellites, which start flagging fires when they're already the size of a cruise ship.

Ten solutions this week with Arielle and Karissa, including the first gallery in history dedicated entirely to women artists and five French food principles that have nothing to do with tracking macros.

Transcript link: https://www.optimistdaily.com/?p=1422600

If you have questions, comments, feedback, suggestions, or just want to say hi, send a message to: podcast@optimistdaily.com.

Want to be part of the Optimism Movement? Become an Emissary.

Subscribe to our FREE Daily/Weekly Newsletter and follow us on Instagram, X, and Blue Sky.

The Optimist Daily is a project of the World Business Academy.

Donate link: https://www.optimistdaily.com/donate-to-support-the-optimist-daily/?lsc=41ef528d

Theme and all original music by Marvin Lanes