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

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

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 ++ [Image: David Jaramillo; Music: Jeffrey Cook] Authors: Meagan Cantwell; Rodrigo Pérez-Ortega, Sarah Crespi Learn more about your ad choices. Visit megaphone.fm/adchoices

Tämä jakso on lisätty Podme-palveluun avoimen RSS-syötteen kautta eikä se ole Podmen omaa tuotantoa. Siksi jakso saattaa sisältää mainontaa.

Jaksot(642)

Hunting asteroids from space, and talking to pollinators with heat

Hunting asteroids from space, and talking to pollinators with heat

First up on the podcast, we’ve likely only found about half the so-called city-killer asteroids (objects more than 140 meters in diameter). Freelance science journalist Robin George Andrews joins host...

11 Joulu 202527min

Grappling with declining populations, and the future of quantum mechanics

Grappling with declining populations, and the future of quantum mechanics

First up on the podcast, Science celebrates 100 years of quantum mechanics with a special issue covering the past, present, and future of the field. News Contributing Correspondent Zack Savitsky joins...

4 Joulu 202538min

When we’ll hit peak carbon emissions, and macaques that keep the beat

When we’ll hit peak carbon emissions, and macaques that keep the beat

First up on the podcast, when will the world hit peak carbon emissions? It’s not an easy question to answer because emissions cannot be directly measured in real time. Instead, there are proxies, sate...

27 Marras 202526min

A headless mystery, and a deep dive on dog research

A headless mystery, and a deep dive on dog research

First up on the podcast: the mysterious fate of Europe’s Neolithic farmers. They arrived from Anatolia around 5500 B.C.E. and began farming fertile land across Europe. Five hundred years later, their ...

20 Marras 202532min

Solving the ‘golfer’s curse’ and using space as a heat sink

Solving the ‘golfer’s curse’ and using space as a heat sink

First up on the podcast, Online News Editor David Grimm joins host Sarah Crespi for a rundown of online news stories. They talk about lichen that dine on dino bones, the physics of the lip-out problem...

13 Marras 202528min

Understanding early Amazon communities and saving the endangered pocket mouse

Understanding early Amazon communities and saving the endangered pocket mouse

First up on the podcast, Contributing Correspondent Sofia Moutinho visited the Xingu Indigenous territory in Brazil to learn about a long-standing collaboration between scientists and the Kuikuro to b...

6 Marras 202535min

Detecting the acidity of the ocean with sound, the role of lead in human evolution, and how the universe ends

Detecting the acidity of the ocean with sound, the role of lead in human evolution, and how the universe ends

First up on the podcast, increased carbon dioxide emissions sink more acidity into the ocean, but checking pH all over the world, up and down the water column, is incredibly challenging. Staff Writer ...

30 Loka 202545min

The contagious buzz of bumble bee positivity, and when snow crabs vanish

The contagious buzz of bumble bee positivity, and when snow crabs vanish

First up on the podcast, the Bering Sea’s snow crabs are bouncing back after a 50-billion-crab die-off in 2020, but scientists are racing to predict what’s going to happen to this important fishery. C...

23 Loka 202527min

Suosittua kategoriassa Politiikka ja uutiset

uutiscast
aikalisa
viisupodi
ootsa-kuullut-tasta-2
politiikan-puskaradio
rss-ootsa-kuullut-tasta
rss-vaalirankkurit-podcast
tervo-halme
rss-podme-livebox
rss-asiastudio
rss-pinnalla
aihe
the-ulkopolitist
et-sa-noin-voi-sanoo-esittaa
rss-kaikki-uusiksi
rss-ulkopoditiikkaa
yksilla-raahessa-podcast
lotta-paakkunainen
rss-hyvaa-huomenta-bryssel
rss-girls-finish-f1rst