d, w, travel recorders and youtube ers drive across europe on electric power tourist highlight and insider turn and elect your buying road trip with 30 minutes on d. w. what secrets lie behind these walls? discover new adventures in 360 degrees. and explore fascinating world heritage sites. d w world heritage 360. get it out now. ah. nature is beautiful and useful. but are we useful to nature? what plants should we grow in our cities to support local ecosystems? how can we keep snails out of our vegetable gardens without harming them or other creatures?

and how can mushrooms help us give something back to nature after our deaths? all that and more coming up. ah, hello and welcome to tomorrow to day the science show on d. w. and later like this is full of activity flowers blossoming butterflies flying and bes humming scientists have proven that farm land meadows serve as a source of food. a habitat for pollinators act as carbon sinks and helped to replenish groundwater. and they say that's especially true when a wide variety of plans can be found there in large numbers. but doesn't matter whether the various plans are native species or come from other regions

what to biology is doing in a garden center when they don't even have gotten they're looking for what's on offer for gardens and balconies. japan seeger, and my stout are on a mission to safe native plant species. the idea about concept is that we want to harness the enormous potential of the millions of green areas that we have in germany and other countries like germany. so we have gardens and lockman sidewalks balconies. it's all spaces where there are people living intimately with these spaces where people are interested in planting things in the spaces. and what we want to do is redirect those efforts towards native plants that are threatened at risk of declining already are declining. it's

mostly native plans, the cultivated and urban areas around the world. it could help to slow the decline of bio diversity. but why is the focus a native plans so important with currently recount 13000 non native plans and the entire plan diversity is 370000 plants. so the only supports neophytes. so the non native plants, then we only support the small fraction and these plans already managed very well to disperse, so they are not addressed. whereas many native towns are at risk in germany, around 30 percent of native plans are endangered. landscape architect claudia fagan plague books with tree traps and flowers in her experience. customers don't usually ask for a native or exotic clause there. just one hardy plans that are resist to disease

and easy to care for. and what does she prefer to plant here via not to alicia shawn. they are dog knocked out of ours. we make our selection space very much on the design, depending on what people want. hold on, let deloitte. so 1st we look at what people want. i think and then we look at the location but because they are all really different. a 5th one on of to frank knowledge. then we choose the right plans. i don't question. for example, they can tolerate shade or loans for will i tonka long or species that are able to cope with less water div placement venue offered to let con, it boils down to a mix of native and non native plants. when people do ask about native plants, they usually mean plans that will support in 6 and birds. se, se, claudio figure. and he in the garden center, they are a lot of insects. but up potty latest, more attracted to exotic are native plants? ah, less it evolved conasauga as of us will you?

i can't really say exactly what we see here is that insects like going to non native plants, one lot of lansing because sometimes these plans fill the gap. when native plants are taking a break from planting a no poet idling. rough, i said that probably makes most sense is having both variance in follicle. so native species supplemented by non need of one solution. i can think of the friend glendon all that clear servers in the light season natural history museum. he is a specialist on invertebrates, which includes insects. the museum has around 300000 in its collection. does he think non native plants are a problem for native insects when fetishes as chemical plymouth, and it's not a problem when a new species appears. disease, the question is always how they fit into an existing ecosystem, please home. and that is very difficult to predict in advance line griffith because

in a new ecosystem, they encounter many species of animals and plants that they are not prepared for sized meals. so we don't know if there will be negative or positive impacts or no impact at all are kind of looking at and what about wild beasts? because compo of unrequited that depends on how good they are at dealing with changing flora. of course, there are generalists among wild bees in, for example, many bumblebees can use a wide variety of plans for food. but there are also many beeson bumblebees that cannot. they depend on a small number of plans, youngers, and when those plans disappear. so to the bees, philip dorski is also a biologist, and he too, is concerned about protecting biodiversity. what looks like a garden where nature has been left to its own devices? it's actually the result of gardening that emulate nature. but out of the plans he

had primarily native species liking mashed out am julianna siegel want ah, was excellent disciplines. mm hm. so the non native plants we have here are mainly crops, look slang. for example, we have sushi one pepper ice pins which can be used as a spices of growth for and we also have fig trees, like prof. i and we harvest the fruit gel one. so t, jaime, flour native plants are primarily for the animals. so like these wild areas here by the pond, not one on flashing job, it's most pres young pies. oh, but of course one or 2. there are also native plants that we use. like ment i spoke to you in windsor. ah, the mix of native and non native plants seems to work well for many animals like these dragonflies, bees and lizards. natural garden has many advantages, but it is a lot of work. it gardeners need to be knowledgeable about the plans. it must out

inches and seger like the natural garden but doesn't live up to the idea of god that supports late of plans and ecosystems. i think the best ratio is probably to have between 10 to 20 percent non natives new fights. um and the rest are 80 to 90 percent of native plants species. and especially for on the near fi it's it would be desirable that they kind of fit into our ecosystems as well. so that an intake pollinators recognize the species. they're still one big sticking point, according to research, as people's perception of what constitutes a beautiful garden, needs to change. but maybe it's helpful to know that a garden with such a mix of plants, could better survive climate change. even

a well planned and planted garden that's equipped to combat climate change may be no match for snails. and no wonder worldwide, there are over $40000.00 species of snails and they can be found everywhere in the sea, in fresh water and on land. and they love to eat where the native plants or exotic species snails love them. all. so do we stand a chance of keeping the most of our gardens now that's what you call moving at a snail's pace. a snail this big travels at 0.003 kilometers per hour. that's just 3 meters an hour. and it's carrying quite a load. the shell on its back provide shelter when it's too cold or too warm. and this hole in the front door allows the snail to breathe. their eyes are also

fascinating. an antenna extends outward like a telescope. though the eye on top can only tell light from dark, but snails have an impressive sense of smell and can tell when something tasty is growing in a garden. snails not only love to creep around, they also love to eat a lot. if they consume their weight in food every day, their veracious appetite often causes conflict and makes them the bane of every gardener. ah, oh ah, but all snails are not the same. those with a shell help to keep gardens healthy. they feed mainly on dead plant and animal remains playing

a key role in homeless formation while cleaning up the garden. at the same time. only slugs essentially, snails without shells are considered garden pests. like the spanish slug. how can you combat slugs? most methods focus on killing the intruders, but that affects both slugs and snails alike. household salt is especially brutal slugs die painfully from dehydration and beer traps are so attractive that they laur snails from neighboring gardens. even organic slug pellets made from ferric phosphate can be harmful to snails, natural enemies, such as hedgehogs, mice and birds. it all depends on how many sales they eat. what's the right method? covering plant beds with dry material is one alternative to gathering up. been relocating snails each day. sawdust egg shells,

sand ash or dry coffee grounds are tough to slither across. slugs like it, damp predators like runner ducks are an especially effective but labor intensive option. a one to one mixture of chili powder and cinnamon works to at least in countries where snails aren't familiar with the scent of cinnamon. it keeps them from smelling. let us when she leave it and once it is lug has tasted a plant with chilly on it, it will never go back and word gets out as quickly as will sprinkle the mixture over the bed bit and put some on the leave. some on the soil, it's non toxic, but i'm appetizing for slimy lettuce thieves. sales are a minor problem compared to the major threat posed by climate change wold why droughts and dry periods are increasing often leading to crop failure. but the long

term arid ground also poses an existential problem from micro organisms, plants and animals. and therefore, for us as well, much research has been conducted to find remedies. in switzerland, for example, they're looking for ways to make the best possible use of water in agriculture. water is a precious resource, philipo nay. as a researcher at the swiss center of excellence for agricultural research or agro scope, he has been ideas about how to preserve water is your bhaskar honorably important goal is finding the right amount of water up so we can use as little of it as possible for irrigation while still achieving the best possible while it was a blue flat band holler may yo object if god he bets monee is working on a drip irrigation system. for orchards, each tree needs

a little more than 12 leaders per day and using the right amount in the right places helps conserve water. you both saw it reminds me of an australian publication which demonstrated that drip irrigation can reduce water use it by 50 percent day discuss i called course old or other studies may be less optimistic, but all of them come to the same conclusion. drip irrigation is an efficient method of distribute water to fruit trees, especially when used in combination with ground sensors. 2 separate sensors at different depths and the ground measure its moisture. when the song gets to dry, the sensors send out a signal indicating that the tree needs water. the signal triggers the watering system up to 3 times a day. money has conducted trials on 30 different fields, and he's developed a fully automatic irrigation system. it prevents waste and guarantees high yields

the sales cova. we're in a part of the orchard, is that for experimental reasons, like we haven't irrigated at all? is it due to alsco was occur, leaf wasn't we observe is that the fruit here is not only small and it's not the best quality quality a preserve the in terms of 1st choice that would cost the grow or tens of thousands of francs per hector in income, the mass wits at that deal to over new polar, the product of the drought is noticeable between the trees. the dry summer has caused major problems with these trees have died if they hadn't been irrigated opa dekalb yard. the tell you how long a tree will survive without water. in fact, a tree has mechanisms that allow it to survive without water healing, belma the seal of evil. what without water, they stop growing and can't thrive quasi prison,

develope the growth of the shoots and the branches go will be completely starved, was as will the growth of the fruity culprits. mo, elec, was the, if we, so it's the yields the quality of the production that is affected by the lack of water g a defective baja polymer do. aside from psalm probe's, there is another way to measure and trees need for water. den durometer is a research project by monet's colleagues, measures the diameter of the tree trunk during the course of a day. the trunk expands or contracts. when the sunshine's, the tree loses water and becomes thinner when watered in the evening, it expands again overnight. if a tree doesn't get enough water, it can't regenerate and experiences what's known as water stress that has a negative effect on yields. the researchers irrigation system is faster and more precise and also more reliable than it. so when the irrigation is well adjusted,

it ensures that human errors won't occur. she, it's often valves that people forget to close, that lead to waterways toward one of these all bicycle. now li, as water becomes a scarce commodity around the world, water saving technologies like these are more vital than ever. mushrooms have been around for longer than humans. the oldest fossil fungi discovered by research, as is some 700 to 800000000 years old. mushrooms pop up everywhere and can do amazing things to if their qualities are even of interest to undertake his mushroom, my sylium can be used to make things like bricks and houses that are really stable and fun. guy can decompose organic material, including complex life forms. ah, a lab coat,

rubber gloves, safety glasses, some wood shavings, and fungal spools from the laboratory. mix them together, add water and weight. that's all bob hendricks needs to do to grow a coffin. labeled though with anthem growing, david edinburgh and gretta tune berg would be fans of my mushroom. my celia coffin, the st. it's an invention for folks who think about the generations to come at home new after their day. want to be one with nature and enriched the soil as compost and will not contaminated human combust. is that a disrespectful or brilliant idea? the young industrial designer invented his mushroom. my cellular coffin almost by accident. but studying architecture, he dealt with living building materials. since my salia can be used everywhere, looking at a slithered, lo, my sylium brings life back to the soil self and it grows fast and needs no

electricity, heat nor light. in fact, did even absorb c o 2 while it grows was only so the more people who are buried this way, the better it is for the earth that's fundamentally different to our burial rituals to day put it up order. in just 7 days that my salient grows in a pre formed mode, forming a living coffin who surface feels like a velvet cushion. the coffin is then dried to stop the growth. the fungi, then lay dormant. the coffin looks like a styrofoam box and is just as light, but it's a completely natural product. that is the inter saunders of what special is the emotional perception when you touch it. so it feels good. hi by it's warm, soft and light, but also very stable. yeah. so who's the corpse inside can be almost 2 meters tall and way up to $200.00 kilos. for the burial, it's placed on

a bed of fresh moss to speed up the decomposition process. the moist moss comes into contact with the dried my cellular, bringing it back to life. more than 100 people have already been buried in my cellular coffins in the netherlands. last year funeral director john von cast her up. so the 1st living coffin for an 82 year old woman, the myself, ian based versions, cost $1500.00 euros cheaper than conventional coffins. ignoring me to not a man, sir, i don't think people choose a my sylium coffin for financial reasons. my rather uh, really want to send a signal to the rest of the world. um, we almost do our part and only leave a small carbon footprint behind on this planet and also blown it off to laugh because around the world,

some $160000.00 people die each day and they leave traces behind. not just in the hearts of their loved ones, but also as toxic substances. one of the most resource intensive burial methods is the classical christian ceremony with a wooden casket. each year thousands of tons of wood steel, bronze, and copper are buried under ground. cremation isn't much better in europe, around 70 percent of people now choose to be committed. however, this produces harmful emissions and toxic ashes at the cemetery, it can take up to 10 years or more for a corpse to fully decompose in a traditional wood and casket. by contrast, with the living coffin, it takes just 2 to 3 years. and at the same time, the myself i'm released is nutrients into the soil for new plants. so word about this, dutch invention has spread quickly. more than

a $150.00 funeral homes took advantage of the opportunity to learn about the idea of organic burials from bob hendricks himself. he certainly convinced funeral director york few vague from here my wish that on taught with burials death and warning, i'm closing sustainability is a really big topic. came out. it's also one that's in a huge boost in recent years on it. and i think it will become even more important for me because the people who will barriers you and me are the ones who are on the streets demonstrating with gretta every friday. but today it offers austin in product. i want to be young. even if some people aren't yet ready for more sustainable burial culture, bob hendricks and other funeral directors expect that soon. many will choose living coffins as their way of giving something back to the earth.

that are also part of the circle of life. they help to spread plant seeds, they eat insects and keep their numbers in check. some even thing quite nicely. and they often do that from lofty heights. power lines are a popular place of flux. that's to land, which seems well, the whiskey that prompted via ha, hey, might say a to send us the question all the way from colombia. why aren't birds electrocuted by power lines? power lines offer birds are lofty landing spot. but they've chosen a high voltage look out more than 100000 volts flow through the cables. by comparison in europe, normal power sockets have just 230 volts. that means the voltage of their perch is

more than $400.00 times higher. and yet our feathered friends don't even notice. nothing will happen as long as the bird touches only one cable. no electricity flows through the bird because 2 neighboring points on the cable carry very little voltage. birds can relax and enjoy the view thanks to the principle of electric circuits. they function like this. let's use a single wire to connect a battery with a light bulb. nothing happens. electricity doesn't flow through the light both until we take a 2nd wire and complete the circuit causing it to glow. when a bird sits on a power line, it's like a light bulb with just one wire. nothing happens.

because power lines are like positive polls. electricity can only flow when they make a complete circuit together with the ground, a negative pole. that's the reason power lines rarely pose a danger to smaller birds. busy with but power lines and transmission towers can be troublesome for larger bird, like eagles, storks, geese, and even crows room every year. thousands of birds die from electrocution in germany alone. all that can happen when they touch 2 cables with their wings and create a short circuit or when they touch both tower and de cable loose, the circuit is then complete. and high voltage electricity flows through their body . ah, this dazed duck appears to have been one of the lucky ones. it hopefully just got

a minor shock. if our blood is red, why i, if you have a science question, send it to us by video, text or voice message. if we answer it on the show, we'll give you a little surprise as a thank you. come on, just does that's it for this edition of tomorrow to day the d w. sign show. it's nice that you could join us until next time. good bye. and remember to always stay curious ah, ah ah

ah ah ah aah! with 2000 kilometers in an electric camper with a check in special with alison and eric below. the dw travel reporters and youtube

ers drive across europe on electric power tourist highlight and insider tips and elect. you're buying road, triple chicky. coming up on d. w. o. gone with the wind. no revered to this day. 10 oscar films that made history milestones of cinematic arts and how they changed the world with 3 minutes on d. w ah, in many pollution. so now in the world

right now, climate change very cost the story. this is my flex the way from just one week. how much work can really get we still have time to go. i'm going on with his subscribe along was like, oh india. a land of contrast of ambitions of inequality. 75 years ago, mahatma gandhi peacefully led the country to independence with ideals. what is remained of his vision with what's the status of human

rights and social justice in what's called the world's largest democracy with with is the moment to unleash on violet boss and re imagined galleys teachings or elements to us. ah, gandhi's legacy starts january 28th on b, w ah, this is the w news, and these are on top stories. in the us, please have stopped in such a white van. they believe is connected to a mass shooting near los angeles. officials say they found a body inside the van.