Nashville is built on a kind of bedrock that’s famously difficult to tunnel through, so what does that mean for new plans to make an underground passage to the airport? Plus the local news for July 29, 2025 and a heavy polluter in East Tennessee.

Credits: 

This is a production of Nashville Public Radio

Host/producer: Nina Cardona

Editor: Blake Farmer

Additional support: Mack Linebaugh, Tony Gonzalez, Rachel Iacovone, LaTonya Turner and the staff of WPLN and WNXP