DiscoverScience Magazine PodcastAn oasis of biodiversity a Mexican desert, and making sound from heat
An oasis of biodiversity a Mexican desert, and making sound from heat

An oasis of biodiversity a Mexican desert, and making sound from heat

Update: 2020-07-02
Share

Description

First up this week, News Intern Rodrigo Pérez-Ortega talks with host Meagan Cantwell about an oasis of biodiversity in the striking blue pools of Cuatro Ciénegas, a basin in northern Mexico. Researchers have published dozens of papers exploring the unique microorganisms that thrive in this area, while at the same time fighting large agricultural industries draining the precious water from the pools.

David Tatnell, a postgraduate researcher at the University of Exeter, talks with host Sarah Crespi about using heat to make sound, a phenomenon known as thermoacoustics. Just like the sound of fire or thunder, sudden changes in temperature can create sound waves. In his team’s paper in Science Advances, Tatnell and colleagues describe a thermoacoustic speaker that uses thin, heated films to make sound. This approach cuts out the crosstalk seen in mechanical speakers and allows for extreme miniaturization of sound production. In the ultrasound range, arrays of thermoacoustic speakers could improve acoustic levitation and ultrasound imaging. In the hearing range, the speakers could be made extremely small, flexible, and even transparent.

This week’s episode was produced with help from Podigy.

Listen to previous podcasts.

About the Science Podcast

Download a transcript (PDF)

[Image: David Jaramillo; Music: Jeffrey Cook]
Comments 
In Channel
loading
Download from Google Play
Download from App Store
00:00
00:00
x

0.5x

0.8x

1.0x

1.25x

1.5x

2.0x

3.0x

Sleep Timer

Off

End of Episode

5 Minutes

10 Minutes

15 Minutes

30 Minutes

45 Minutes

60 Minutes

120 Minutes

An oasis of biodiversity a Mexican desert, and making sound from heat

An oasis of biodiversity a Mexican desert, and making sound from heat

Science