You might look at everyday items in a different light after this episode, as we hear best-selling author and Woodland Trust ambassador, Jonathan Drori CBE, reveal some of the fascinating things we make with plants. From the well-known coffee bean to the tree bark that's used in spacecraft, he shares some of the amazing relationships between familiar objects and the natural world as we meet beneath a beautiful beech tree on Parliament Hill in London.

These stories and more feature in Jonathan's latest book, The Stuff That Stuff Is Made Of, which aims to spark an interest in nature for younger readers. He explains how discovering the wonder of nature in a fun, exciting way as a child can inspire a lifelong connection, just as it did for him. We also discover why fruit is sweet, the value of the mandrake plant, how beech is thought to resist lightning and more.

Don't forget to rate us and subscribe! Learn more about the Woodland Trust at woodlandtrust.org.uk

Transcript

You are listening to Woodland Walks, a podcast for the Woodland Trust, presented by Adam Shaw. We protect and plant trees for people to enjoy, to fight climate change and to help wildlife thrive.

Adam: Jonathan Drori CBE, is a man of many talents. He's a trustee of the Eden Project and of Kew Gardens, a member of the Royal Institution, a man who used to be a senior commissioning editor at the BBC, and he's also an ambassador for the Woodland Trust and a best-selling author of books such as Around the World in 80 Trees and his latest, The Stuff That Stuff Is Made Of, a book for younger people about the plants in their lives and the things they make which are all around them. And whereas these podcasts often take me on long journeys, this time, well, it's just a hop, skip and a jump away in London at Parliament Hill, where we met to talk about his book and the things we didn't know about the stuff around us all. Right, we are... it's a bit windy right here. It actually sounds windier than it is, but we are in Parliament Hill, or thereabouts, with Jonathan Drori, who has written the stuff that stuff is made of, and is also a big noise, essentially, in the Woodland Trust itself, of which we can talk lots about. But we're standing by a beech tree. So, Jonathan, why did you write this book?

Jonathan: I wanted to do something that would make kids kind of interested in the natural environment. Starting with the things they're interested in, which are kind of ice cream and chocolate and sport and dinosaurs and all that kind of thing. And use their own interests to sort of spark other interests in nature, in trees and plants, and also actually in history and folklore and culture, which are all sort of bound up with those things. One of the things I've tried to do with the book is to explain things from the plant's point of view as well as from a human point of view. So there are all these qualities that we desire plants for, whether that's sort of sweet things to eat or things to build with or things to make musical instruments out of. And they're all in the book and that's fine. But I've also tried to explain, you know, why has bamboo evolved in the way that it has? And why has a beech tree evolved the way it has? Why does chocolate have sweet mush around the seeds? You know, why do the grasses feed us? Why is sugar cane sweet? And why do we love it?

Adam: And so through this book, you're trying to attempt to do that by explaining stuff like tea and chocolate, indeed, where it comes from.

Jonathan: Yeah, I mean, there are 30 different species that I deal with in the book. And on the right-hand side of the page, there's a whole lot of information about the way that the plant grows, how it's cultivated, the relationships that it has with other plants, with the little critters that might pollinate it or disperse the seeds. And on the left-hand side, there's a whole lot of stories about the plant, all kinds of kind of fascinating facts and really about the human relationships with that plant.

Adam: Do you think we have lost that connection with the plants around us. So that this sort of stuff might have been really obvious a few generations ago or not.

Jonathan: *laughs* A leading question, m'lud! Yes, I mean, you know, with urban living and things being in packets at the supermarket, you know, we perhaps don't think very much about where the basic materials for our existence come from, whether it's things we eat or things we build with or things that we just sort of like looking at and playing with.

Adam: Is it important to know those connections? I mean, you as someone who likes nature, I can understand why you might feel that's important. But is it important for us all to rebuild that connection?

Jonathan: I think that my love and interest in nature came from my parents, actually, at the time, dragging me around Kew Gardens and Richmond Park and telling me stories about the trees and plants that were growing there. And they did that in such a way that I would be interested because they knew who I was and so they found the things that would sort of excite me. And I think I want to do the same for young people so that they grow up with a kind of interest and admiration and some sort of understanding of nature. But you can't sort of ram it down people's throats. It needs to be fun.

Adam: Yeah. But why is that important? I understand that's what you want to do, but why is it important?

Jonathan: Well, we've only got one planet. And if we don't look after it, then, you know, our lives and livelihoods are doomed. So that's the sort of very basic reason. And also we are part of nature, so just, not having an understanding or rejecting nature is kind of rejecting part of ourselves, I think.

Adam: So it's a soft environmental message here. And that's also seems to me important because, well, from my perspective anyway, it feels like a lot of environmental charities and environmentally minded people push a sort of narrative, the world could end, it's all a disaster. And actually, I worry that, although it's well-meaning, it might turn people off. Now that isn't what you're doing with this.

Jonathan: No, there's none of that in the book, none of it at all. What I've tried to do is to excite people about the stories of pollination, of the little critters that live in and around plants, the relationships that the plants have with other plants and so on in the environment, and make that sort of exciting and fun and interesting enough that people will just say, say to themselves, that's kind of something that's worth protecting. Maybe they won't think that for 10 or 15 years.

Adam: There's lots of interesting stories here. I think the one that really struck me, I think, was about vanilla. So vanilla, obviously, people use it in cooking, they might use essence of it or whatever. But am I right in saying, you think it's in the book, you actually go, there was a boy, and you name this boy... oh sorry is that a bird I can hear? *laughs* sorry!

Jonathan: It's the parakeets.

Adam: Oh it's the parakeets, I thought there was a squeaky wheel behind me! No no. All right, parakeets in the background. A named boy who taught the world how to pollinate vanilla. Tell me that story.

Jonathan: Yes, it was an amazing story actually about vanilla that in about the sort of 1840s, when they brought vanilla plants over from Mexico where they were native, to Africa where they wanted the plantations to grow and the little bee that pollinates vanilla didn't really travel. And so they had to find something else that would pollinate the vanilla plants so that the vanilla plants would propagate and grow. And sadly, they couldn't find any insect that would do that. No local insects would do this in Africa or outside Mexico. So all the vanilla plants had to be pollinated by hand. And it was a 12-year-old boy, Edmond Albius, who worked out how to do this. And by basically sort of cutting a bit of membrane and then squidging the two bits together and right to this present day, that's the way that vanilla is pollinated, by hand. And that's why it's so expensive.

Adam: It's amazing, isn't it? Apart from the vanilla story, do any others stand out in your mind? Is there ones your favourites?

Jonathan: Oh, it's like asking your favourite children, isn't it? I mean, there are all sorts of things in there that I notice when I talk to young people, to sort of eight, nine-year-olds, they sort of come alive. Those who've read the Hogwarts stories and Harry Potter, they're amazed to discover that mandrake is actually a real plant. And of course, mandrake used to be very, very valuable because it was one of the very few plants that could be used as an anaesthetic. And people used to, back in the Roman days, they used to mix it with wine and then sort of do minor operations and things. Don't try this at home! It's actually a real plant. It grows somewhat, I've seen this in this country, but it grows in Italy quite well and it has these rather sort of mind-altering attributes to it, which are a bit odd.

Adam: So it might be used by people who want that sort of druggy effect, but does it have any other purpose?

Jonathan: Well, not now, but it was an anaesthetic, and anaesthetics were so sort of unlikely, you know, if you think about it, you take something and it makes the pain go away, that people associated the plant with witchcraft, especially as it gave you the impression of flying. And so a plant that could alter your outlook and the way that you see the world so profoundly, and the way you perceive it so profoundly, was associated with witchcraft. And people made all sorts of stories about the mandrakes that they, that when you pulled it out of the ground, they said, that you could hear it scream because sometimes the roots look a bit like a person, especially with a bit of judicious whittling. And so people would say you've got to get a dog, tie the dog to the mandrake root and then kick the dog or throw it some food and it pulls it out. And the scream, they said, of a mandrake root could make you, could kill you.

Adam: And weren't they doing that to stop people, scaring people away from getting their valuable mandrake?

Jonathan: That's right. It was such a valuable plant that the ideal thing to do would be to put these superstitions around, these notions around, so people wouldn't pull them out, because it's very valuable.

Adam: Hippy dragon sort of thing. Well, look, we are here in London, a park in London, a beautiful park. But you've taken me to one of the few trees that actually appears in the book, because so many of the, well, I think almost all the trees really, you wouldn't find in the UK, is that right?

Jonathan: Well, you can certainly find eucalyptus. You can, you know, it's not a native, but you can find them here. And any other trees that are in there, you'd certainly find in botanic gardens. And there are fir trees, Christmas trees in there as well. But here we are by a lovely, lovely beech. And I mean, there are lots of reasons I love beech trees. In the book, one of the reasons that it's in there is because beech wood is made for, is used for veneer and it's used for making furniture and so on in a sustainable way, so it's a very pleasing wood.

Adam: And why is it good for furniture then?

Jonathan: It's stable, it doesn't shrink too much.

Adam: Is it bendable, is it one of those trees that you can...

Jonathan: Yeah and you can sort of use steam to bend it into the shapes that you want. And there are these fantastic machines that make veneer by sort of peeling off a kind of onion ring, rotating the trunk and then sort of peeling off the wood underneath to make veneer. As I say, using sustainable beech forests. But one of the things that I love about the beech is the link with superstition because in Germany, and actually in quite a few countries in Europe, there's this saying that lightning never strikes a beech tree. And in actual fact, lightning strikes beech trees just as often as any other trees that are of similar height. But beech trees seem to survive. And the reason they survive is because of this wonderfully smooth bark. The bark continually renews itself, unlike other trees. And so you've got a layer that is sloughing off all the time and leaving this very smooth bark. And that smoothness means that during wet weather, during a storm, the outside of the tree has a continuous film of water on it. It's wet all the way and that can act as a lightning conductor, whereas the craggy old oak, that has dry bits in it and so the electricity from a lightning strike is diverted through the middle of the tree and would blow it asunder. So the beech tree can survive.

Adam: Fantastic. Talking about the bark on the tree, one of the other things I spotted in your book was, I think it's cork trees and how the bark of that is special in the way we use it, but also in the way that the tree regenerates, just explain a bit about that.

Jonathan: Yes, I mean, most trees, if you sort of cut a whole ring around the tree, it'll die. But cork actually regenerates itself. So you can harvest the cork every 10, 12 years or so. And cork forests in the Iberian Peninsula, in Portugal and in Spain have a fantastic sort of ecosystem around them. The lynx and wild eagles and all sorts of wonderful things that live in and around. And also pigs go rooting for the for the acorns. And that ecosystem is a very important one. And it depends on us all using cork. So don't use plastic cork.

Adam: Right. Oh, I was going to say, unfortunately, a lot of wines now have plastic.

Jonathan: Try and go to the ones which are made out of proper traditional cork. And you're doing the planet a service by doing that. Another interesting thing about cork is that it's a fantastic insulator and it's actually used in the nose cones of spacecraft.

Adam: So why? That is, I did read that and that was extraordinary that something as advanced as a spacecraft would be using cork. It seems unbelievable.

Jonathan: Well, you know, millions of years of evolution have given the cork oak this way of resisting fire. So it's got tiny, tiny air pockets, minuscule microscopic air pockets in a non-flammable kind of medium. And that is an amazing insulator. And it's light, it chars on the outside and then flames just can't get through.

Adam: And it's soundproofing isn't it?

Jonathan: Yes, it's used in recording studios.

Adam: Yes. Well, when I was 17, I took a fancy to corking my whole bedroom in cork tiles, which looked terrible to be honest *laughs*. It took my father years to pry it off the wall again.

Jonathan: Was that in the seventies perhaps?

Adam: Yes exactly. It was trendy then for a short period.

Jonathan: Roman women used to wear cork-soled sandals, which you can still get, but so they didn't sort of walk in the poo and whatnot. But they're very good, very light, very insulating.

Adam: One of the ones I suppose we should talk about, interesting, is cotton, because it has an interesting background, a natural background, but also one, of course, deeply connected with slavery and everything.

Jonathan: So, you know, it was used in... South America among the Aztecs and so on to make armour actually. They made very, very thick cotton twill that they used as armour. And then it became fabulously valuable in the sort of 17th, 18th century especially, as a textile for our clothing. And unfortunately, as you say, it's got this link with slavery along with sugarcane and tobacco, these were the big crops that people grew, slave owners grew, in the Caribbean and in the southern states of North America, and then made the finished products in Britain that were then sold all over the world.

Adam: And I mean, you have some nice, lovely illustrations here of actually the cotton on the plant and it's a puffball. It doesn't look real, actually.

Jonathan: It's bonkers! It's an absolutely bonkers plant.

Adam: Yes but didn't people, when they first saw it, thought they were actually little sheep or something?

Jonathan: Yes *laughs* Well, the writers of the time, you know, they were all sort of knew that they would get a big audience if they made up some stuff so I'm not sure whether they really believed it. But certainly there was a textbook of the, I think it was the 17th century or early or late 16th century, where they sort of wrote, had diagrams of, because they thought it must be some kind of wool, they had diagrams showing little tiny sheep at the end of twigs on the plant *laughs* which supposedly would, you know, sort of the twigs would reach the ground in the evening and then the little sheep would, I don't know, wander off or something.

Adam: No one actually ever believed this, you're saying?

Jonathan: Well, I mean, no, well, I think it was created as a spin, but I think a lot of people did believe it, actually, in the same way that they believed in sea monsters and all those sort of naval stories that were brought back. And it was a very, yes, people believed all sorts of kind of nonsense and about where cotton came from. But the plant itself is very real and quite an odd one because you have these lovely sort of pale creamy flowers. It's sort of quite big, the size of a walnut kind of thing, you know. And then you get the seed pod which is absolutely bursting with all the fibre inside and the fibre's there to help the seeds carry on the wind. That's what the plant wants it for. But these burst open with this sort of great wodge of, I suppose, it looks like cotton wool. And it pretty much is cotton wool. And then the seeds are removed in a process called ginning. And the fibre that's left is then spun into thread.

Adam: Amazing story. The last one I suppose I really want to talk about is something you started with saying, you know, engaging younger people in things they know like chocolate. Chocolate doesn't come from Tesco or Sainsbury's, it comes from the cacao plant. Now, tell me a bit about that, but specifically what surprised me, if I remember this correctly, you said the chocolate we know was invented in England, is that right?

Jonathan: Well, the chocolate bar was invented by Fry back in the middle of the 19th century. And before that, people would have chocolate drinks, which were quite popular, especially at the time when coffee houses were very sort of blokey places.

Adam: This is about the 1800s, is it?

Jonathan: Yeah. Coffee houses were places where, you know, men would go.

Adam: Yeah, they were they were risky places, they were sort of like pubs almost, you know, like...

Jonathan: Yes, whereas families and women would go to chocolate houses. And some of those chocolate houses then became, you know, well-known clubs in London around Pall Mall and so on. They, but chocolate originally from Central America was a drink that would be taken quite bitter, mixed with maize, very, very nourishing, and was sometimes coloured with red dye, sort of symbolizing blood. And it was part of kind of rituals that they had where they, some of them were quite unpleasant rituals actually and then when it came, when chocolate came through the Spanish to Europe in the sort of 16th century, people immediately started adding sugar and milk and things to it, made it a lot more palatable.

Adam: Right. So it wasn't just the chocolate bar, so we really made it into the sweet drink that everyone knows. Maybe not England, but Europe.

Jonathan: Yes, and the and the chocolate bar was, that started in Britain. That was a British thing, with Fry and I think you can still get Frys chocolate?

Adam: Yeah, I was going to say, I do see it every now and then. It's not as popular as Cadbury's and all the others, but one does still see it.

Jonathan: You know, if you think about it from the plant's point of view, the reason that it's got this amazing fruit, which is about the size of a junior rugby ball, that grows very peculiarly on the stem of the plant, on the tree trunk, the reason it's got this amazing fruit is so that it can find something to be attracted to it that will disperse the seeds. That's why fruit is sweet. And the original thing that dispersed these fruit were probably sort of large, large mammals, which may not be around anymore. But the fruit is, the seeds are in this sort of sweet mush inside the cocoa pod. But your sort of big mammal would come along and gulp the whole thing down because it's lovely and sweet and then poo out the seeds somewhere else or spit them out because the seeds themselves are very bitter. And with coffee and chocolate and quite a few other things like apples even, the seeds are very bitter but the actual fruit is lovely and sweet. And the reason for that is so that something gobbles it but doesn't chew up the seeds. And then those get either spat out or pooed out together with a bit of fertiliser.

Adam: Right, amazing. And also, I mean, we've talked a bit about the social aspects of a lot of these plants. Chocolate itself had a huge social impact, wasn't it? It was seen as sort of an alternative, wasn't it, to alcohol and sort of bringing people into the fold of the righteous living and away from terrible drinks.

Jonathan: Yes, yeah, and it's a much gentler drink than coffee, which would have been quite a strong stimulant. Chocolate also has stimulants in it, but it's a bit more gentle. Yeah.

Adam: So it's an interesting book. I know this is part of something very important in your life about reconnecting with nature and spreading that message. Are you optimistic that things are looking up in that way, that people are engaging more?

Jonathan: I think, you know, I could make an argument for being pessimistic or optimistic, depending on the day, actually. But I do notice that young people have a kind of care for the environment that seems to be growing. And I think that's for obvious reasons, that they see it as their future. I'd say, essentially, I'm an optimist. And when you see plants growing and think about, the fact that they've been growing for zillions of years and will be growing for zillions of years, that is a sort of kind of optimistic thing. I think that young people are much more caring of the environment and sort of interested or I would say open to being interested. So if you kind of open their eyes to things, they're genuinely keen to know more and to do something. So all these schools projects that there are, all these things that the Woodland Trust actually does with schools are very, very valuable because I think with a lot of young people it just needs a little bit of a nudge and they're quite willing to go in a good direction.

Adam: That's a great note to end on and we've, I was worried this morning it looked like it would pour down but we've been spared that. So Jon, thank you very much.

Jonathan: Thank you.

Thank you for listening to the Woodland Trust Woodland Walks. Join us next month when Adam will be taking another walk in the company of Woodland Trust staff, partners and volunteers. And don't forget to subscribe to the series on iTunes or wherever you're listening to us and do give us a review and a rating. And why not send us a recording of your favourite woodland walk to be included in a future podcast? Keep it to a maximum of 5 minutes and please tell us what makes your woodland walk special. Or send us an e-mail with details of your favourite walk and what makes it special to you. Send any audio files to podcast@woodlandtrust.org.uk and we look forward to hearing from you.

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