Floods, mangroves and rampaging tractors
Unexpected Elements
BBC
4.4 • 566 Ratings
🗓️ 8 August 2025
⏱️ 50 minutes
🧾️ Download transcript
Summary
This week, floods have hit the global headlines. First up, we delve into the various reasons why floods form.
After learning about the causes of floods, we discover a nature-based solution in the form of mangrove forests. Laura Michie from the Mangrove Action Project tells us why these ecosystems are important, and how they can protect coastal zones.
We also find out that humans have moved so much water around the planet that we’ve shifted the location of the geographic North Pole.
Plus, a rare flooding event is currently taking place in the Australian Outback, awakening an ecosystem after years of dormancy.
And what could happen when hackers take control of tractors?
All that, plus many more Unexpected Elements.
Presenter: Marnie Chesterton, with Andrada Fiscutean and Sandy Ong Producers: Alice Lipscombe-Southwell, with Lucy Davies, Debbie Kilbride and Margaret Sessa Hawkins
Transcript
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| 0:00.0 | Oh, hello. You have chosen a BBC podcast, but before you listen to it, we thought you might |
| 0:04.7 | like our podcast too. You might. You might. It is called Sightracked with me, Nick Grimshaw. |
| 0:09.2 | And me, Annie Mack. And we talk about the week in music. All the news, all the cultural |
| 0:14.0 | happenings in the UK and beyond. And great guests. And it's on BBC Sounds. Yes, where you can |
| 0:19.7 | also enjoy lots of playlists, music mixes and |
| 0:22.6 | live radio, everything from my six music breakfast show to Radio 3 Unwind. But obviously start |
| 0:29.2 | with our podcast, sidetrack. Obviously. Obviously. So if you like music, listen on BBC Sounds. |
| 0:37.8 | Last weekend, I went camping, which always makes me think of my dad. |
| 0:43.3 | He's not a man prone to giving advice, which made it all the funnier that his one piece |
| 0:48.7 | of fatherly wisdom to me so far has been, never pitch your tent in a wadi. |
| 0:57.2 | I didn't know what a waddy was, had to go and look it up. Dried riverbed by the way, you're welcome. It seemed so random because one, we lived in a |
| 1:04.4 | wet country so all the riverbeds tended to have rivers in them and two, we rarely ever went |
| 1:09.4 | camping anyway. Fast forward a few years, |
| 1:13.5 | at a festival, I spot an amazing bit of land, low-lying and really convenient that no one had yet |
| 1:20.8 | claimed. I pitched my tent. One rainstorm later, in the middle of the night, my bed turned into a lake. |
| 1:29.8 | I belatedly remembered my dad's advice. |
| 1:33.4 | And still do, so this week I was at the top of the field. |
| 1:38.1 | I'm Marnie Chasterton from the BBC World Service. |
| 1:41.2 | This is Unexpected Elements. |
| 1:57.5 | Music This is Unexpected Elements. This show is a science conversation, and I can't do that by myself. But I'm not by myself. |
| 2:05.1 | Joining me today from around the unexpected elements campfire is tech journalist Andrade Fisketan in Bucharest, Romania. Hey, Andrada. |
| 2:15.1 | And in Singapore, we have science journalist Sandy Ong. Hello. Hey, Marni, nih. This is a science |
... |
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