in mediating cultures around the world, people learn to classify small handful of animals with edible and all the rest of the classify as disgusting. a w series about our complex relationship with animals . the debate watch now on youtube. w documentary. the nice memory that's the name of the international project mortgage because sky is working on the chemist take samples from glaciers all over the world stored within the ancient ice for thousands of years of climate data. our research team wants to know, how does climate change work, and what traces does it leave in the ice? that and much more coming up on dw science show. welcome to tomorrow. today the

is minus 20 degrees celsius outside that mortgage macowski has no problem with the cold. she's fascinated by inch an ice. such ice only exists and a few places on us. but temperature is always below freezing the powder regions and particularly high altitude places in the mountains. samples from such mountain glaciers, a store here in the lapse co chamber. this ice is several 1000 years old. as insulation, ice contains lots of the bubbles and that's why it's a fantastic archive. because we can directly analyze the arrows, the palm. it's the only archive on us can do that. i'd love to add them in collaboration with the international research group. the ice memory chikavsky wants to collect samples from high mountain glaciers on old in to did continents.

her goal is to research the climate just mountain regions. thousands of years ago, hunter use the data to improve regional climate, full cost. yeah, i was able to dots and also i, we have very good data from ice cores and i'm talk to cause about only effects to send directly to india likes maternity of course, climate change as global worldwide as in fact, but we want more precise information for the regions where people live for different going well because that's why you have to take measures to protect people from climate change and by spending dimensions for shits. and for them came of i'm guessing to the engine ice is always an adventure icon. bolivia is a non e mountain in 2017. the target glacier life is now st. jude of 6400 meters. 3 such as drill down to the rocky bedrock. not the very books in the ice is 18000 years old. only in the po to regions is the ice older. the ice is

made up of layers that correspond to use in seasons when to produce is lighter ice than summer. between the chemical analysis can determine the exact age. if the ice melts, vital data will be lost forever. the closest problem is that's the biggest problem now with cost is climate change itself. and it's an unbelievable for this one because of it we're having increasing difficulty finding places that distill suitable for this kind of reset, as well as a fossil or reset to object, is dwindling away in that in 2018, she macowski was with the ice memory team on blue. at 4500 meters, the highest mountain and siberia. on the glacier between the 2 peaks, she and her team spent almost 3 weeks in the freezing cold. they were able to drill down to the bedrock, a 160 meters deep is now a cool sample from the glacial lies in front of her in the coal chamber. normally the research is what they weigh into the depth civic leisha bit by bit from top to

bottom. but here the most important question was how old is the i sample on the edge dropped within it? we will see for curious of cool off to the ice of items, but so then we started studying the lowest layers and we now know it's much older than 10000 years old. now the systematic, he's, i'm a nation, begins the reset. she has wear gloves when handling the ice, so was not to contaminate that piece by piece sunset. blanca and giovanni buckler works a way into the past. first, they saw a real fiance last funds. i plug. i wants to nature examine them to pull in to find out which pond screw inside the area thousands of years ago. the interior of the ice cold will be used to search for hydrogen ions, the types that can determine its age, as well as the climate gases and fine dust. the old ice from the glacier that lies 7000 kilometers east of the alps is now this into

the iron chromatograph. the chemist use it to determine the levels of that pollution in the past as this on the so here's the precious glacial i just now we still discount so that we can do a chemical analysis on it. they're looking for gases that have been preserved for thousands of years. greenhouse gases like c o 2 and me thing, but also particulate matter that cruise the climate from the kind of corruptions and forest bias, for example. but the traces of nitrate search, sol, sage labs, and other elements in the ice also reveal human activities, some of which are not yet documented. laska, i looked across the ones with a what's really interesting and that surprised us as the developments in europe. russia actually looks very similar, but we didn't expect the because in europe they introduced pollution control measures in the seventy's and eighty's, but enough, tim russia, by next on done then we left the even before the collapse of the soviet union,

the economy was stuck in a tangle was even in the recession and doesn't result. they no longer buy and just money, fossil fuels. and so we missed that last so for dioxide for see the bunch stuff up on pipe on the edge. but i think that was also a surprise for us because the data one to accessible, instead of coolest, one published by the soviet union that nothing has pockets yet what of what the, the ice cools proof that, that really was a decline even before the collapse of the soviet union and also as adults had months on forward and collapsed as of late. i don't, i'm up to copy the i samples from the alps contain even most surprises, for example, that the ancient romans were already policing the ass with toxic let from mining. it was not until the full of the roman empire that the air became cleaner. again, the more active the economy, the dusty of the at something that's still true today or otherwise employers, let's say also the interest rate is that we can also see these concentrations coming down again on donald guns. todd,

so that we can clearly show that the pollution control measures that we've introduced to also to stop for a sty back and ask rain, have had an impact. as of it can, we can take action if we want to. we can improve things at the best time to come, then you've set t on montero is a 4500 meters high. it's one of the last calculations in the out. the scientists hurry to recover as many i samples as possible, the full meltwater contaminates and smoke edge because sky. notice from previous expeditions that the ice varies ancient. she's determined to recover it and succeeds has, has the team planned to store some of the high schools and, and talk to cap and creation all kinds of ancient glacial ice. which such an archive be safe and then talked to guys, satellite images shows that and arctic sea ice has been breaking up. and usually

early a recent study shows how it's caused the deaths of thousands of emperor or penguin checks as the off spring. don't have the time to develop water proof feathers. projects are either drowning freezing or starving to death. human made climate change is the cause. and penguins weren't the only species suffering. as we see in germany, a cold living trout that lives in oxygen rich streams and rivers. a toad with a yellow valley that needs puddles to survive. on the fat that likes to may, its eggs and other birds nest. just 3 of many species, native to germany, whose existence is threatened by climate change. the author of the pieces that were needed here,

but are unable to tolerate the new conditions will become very rare or even die out or migrate students. some german studies say about a 3rd of species will be negatively impacted, negative 5, low said another species, among them is the brown trout, profess cool condition. somewhere between 7 and 19 degrees celsius ellipse and foss, fleming, unclear streams and rivers in the future are ritual to temperatures are expected to rise significantly, especially in how some of those things may become critical to the ground trouts as to what the temperature of 25 degrees celsius, the adult fish can just about survive. what's above that they die. the reason is the oxygen levels go down and we'll move to the trans touch. we need more oxygen that have temperatures because that metabolism is working harder. and they. busy will need also the moment when the water temperatures get too high and we'll try to

move to cooler water. it will migrate up hill. and at some point of course, their habitat won't exist anymore. it's home for by streams they need simply won't be available. and that would be the end of the brown trout in central europe. there's a host for the buffalo. what determines whether the climate change hits the species with full force that we're full foxes? it's an animal species as location sensitive. i'm not very many miles. if it's sensitive to temperature changes, if it needs a particular and continuous habitats, and can i may be found by or if it's already in danger. and the population has already shrunk to more points that apply to a species. however, it's hit. in the german state of has a 130 endangered species to protect it, to die out as a result, climate change, the yellow valley tired as one of them. it's normally found in what lands and stuff

in, in central germany, many of which have already been destroyed by humans. the yellow valley type need small puddles and palms to lay at school. baltic stream, weather events like droughts and heat waves are becoming more frequent in germany, and soc could spell the end of the species. and she didn't just go to the table for the or for them to be ins. are a group of animals that depend on what conditions are small ponds and water holes. and these run the risk of drawing out during hot spells are drowned by your sites were already experiencing this to a great extent. in places in the state of brandenburg, for example, about 80 percent of all amphibians have already disappeared because the spawning waters are simply no longer there. and you can move on to the nature conservation. and ga, not be estimates that there are about $600.00, although yellow belly type, it's less than the job and stay to pass. that makes the $0.05 me so long tired.

when is the rarest? i'm 50 and it's highly endangered throughout germany. just like the yellow valley tired, the crew also has a climate related of the spring problem in the spring, every tons from its wintering grounds in southern africa and makes the females and liaison and the last of another bad. unless the climate change is upsetting. the buds risk on the, on the, on the shield as clearly we had a shift of almost a month in the onset of spring on central europe, which means that many bird species start breeding our, like our coast short and their migratory routes to return earlier. so we may even benefit by making several broods per year. is of amino avoiding for you all. the cuckoo, however, is a long distance migrant that winter's south of the equator. it can't reduce its migration records because then it would end up in the mediterranean or in this a heart was all along because of the earlier on such of spring along with the

destruction of the habitats of the highest pads. cookie populations have declined in england, for example, as numbers have dropped by 60 percent, and the last to yes to many animal species, global warming means heat, drought, and a change of that habitat. if the average label temperature rises by one degree vegetation site is just about 200 kilometers towards the polls, or about 200 meters of puts in altitude, for instance in the out. some species but depends on certain conditions, cannot keep up and are in danger of becoming extinct. the same applies to species. the already live at the polls or very high altitudes. the brown trout is unable to escape if a stream dries up, who becomes to whom? estimates suggests 90 percent of its suitable habits. austin, germany could be lost by the end of this century. on so many native species of

ecosystems, climate stress due to heat and drought is already a reality today. the devastating wildfires hit again this summer and especially badly in canada and greece increasingly often the blazes seem to spiral out of control just not just due to dried out forest floors, but also fair in tree tops. research teams can tell from tree canopies how endangered the trees are weather in tropical rain forests, where europe's commercial timber lands climate change has arrived in gemini and its forest. but how exactly can you recognize this impact? fits the question biologist about in a z, as in his students. so working on answering the types of research,

tyler at the university of kaiser's lawson, for example. they're investigating how climate change shows often the treetops listen to you in radio 170 year old oak forest here. and we're interested in the plant organisms and micro organisms. sunset can grow in the canopy of the tree, often boiling bucks. the work takes them to the very top of the research, tell us that he's 6 meters above ground. once that assign, just to measure the house and the activity of the most is in like in, so they've of fixed yet the more human does the, how fia, and more active they are on the more active they are, the more of the greenhouse gas c o 2, they can absorb the well being of the most isn't like in salt pet is representative of the house and so far as the eco system, the inputs in order for these organisms are interested in these organisms because

they are very sensitive, very sensitive to changes in climate so not to allow this allows us to detect con matic changes very, very early. so you could also call it an early warning system button system, which means this saturday, warning system made up of most as in like, kens, indicates that the dry and hot some is the respecting the quantity of the habitats as well as already causing serious problems for the x rays growing here, they become more susceptible to diseases and parasites and then the archery at the university of kaiser slauson kind of vs and his students are investigating. another aspect of climate change in the forest to the focus is on which insects count the live on the trees. it matters because most insects, the habits always and feed on assessment tree species. and if it's the she's when she disappeared used to climate change, the consequences would be far reaching the i'm sure i need to

understand what else when some bicycle have what we found in some simulations that is important to us. species such as beach are missing. so tight is set up to 30 or 40 percent of the insect species are lost. so that is definitely an indication that the change can be very dramatic. the abundance at homeowners time, such as scenario would not only impact insects and trees species on dashed a level in 16 pressing at the point where plant eating insects the leaves. the 1st transfer of plants into the food chain takes place logic in your book on from flatten some in the novel condition. all the other organisms of deforest, including humans, depend heavily on an inch because without food welds and without this transfer of materials here. so keep this, there is no longer a functioning eco assessed, all kind of pull, so no production of food that cetera. to prevent this,

we must pass to protect by diversity and ensure that forest management is economically sensitive. been months of bicycle fisher still does suspicion the po, for example, you find that there are certain trees issues that are particularly susceptible to climate change and couldn't. and then you could prioritize replacing the history as in the forest talking 54 ways you can, or you could just protect these 2 species in particular through certain forestry measures to from districts into a spectrum default. other protective methods include fostering mix stage and mixed species for us with drought resistant trees. species oh, trees should be left as long as possible as they promote 5 diversity. a wide range of trees, species is also important mode. i've asked to mix insight comp, networks less to set to species extinction.

trees are great absorbers of climate damage in carbon dioxide. but the world's pete lands are even more efficient and sucking up to c o. 2, than all its forests put together. untouched or restored pete lands make an important contribution to climate and species protection. and they can also protect against the flooding. this example is from the southern german state of the various landscape fuller full to the nickel time of felt. a pulse of one of the largest pete lens and stuff in germany. the area used to look like this, covered with ditches and the water level, still fairly low. it a huge peak struction area. how are you raised some back? i still remember the time back when he was still a little boy. when we moved into childhood, if you look down there, the whole area was black and under when the wind blew,

we've never clouds of dust and everything was dark and black looked like scorch stars. as we flip it on, the i do so get some way more than 200 years ago, pete was caught by hunter to heat living rooms towards the end of the 19th century, it began to be extracted on an industrial scale. fastest fuel than from the 1950s, mainly for potting soil. those practices ended in 2005. and now the water is collected instead of drained something that helps the climate, wildlife, and humans. landscape ecologist canadian has been working with people and since the 1980s she knows the home for the interventions, come the rapacious and the pete lens can then provide even more. she and her husband examine the quality of the pizza oil hair and that goes in those most intox . p ends can retain enormous amounts of water and of that for one of nature's most efficient tools against flooding. it is

12 most each pete, most of the species holds $26.00 times its own way from rainfall this i can give you and says, i need a flock of an ox like a giant sponge. and you can have, it said we've managed to secure massive flood protection for nikolai, but either way restoration started in 2005. and since then we haven't had any more flooding application. go to this nature is of a section of pete lenses. we not true lies at the beginning of this year. the drainage that just for the form of pete cutting were filled in about 30 pete times . now prevent water from flowing out. yeah, yeah, it's not for one and then on to media that will be few of the berry bushes that still dominate here for you. various dimensions. only 2 months old. so it's very newton switched to see that look much more challenging in the long run. and after

a few years, you won't see anything anymore, you'll have to look for it, then it's done. so hopefully pete lens make a major contribution to climate protection because drain payments are not totally unable to store water. oxygen also gets to the pete that causes mineralization which releases climate damage and gases like c o 2. and in some cases, even nitrous oxide, which is even more harmful 6 percent of greenhouse gas emissions and the battery i come from drain to pete lens includes a piece of motor every year. our little bit of heat land can store and the carbon dioxide produced 518000 cars. it's almost about 1100 heck there is have been re naturalized and once they're covered in piedmont has again, will have a real carbon sink here. going to fax that over $220000.00 tech tests of pete lyndon bavaria or larry and just 5 percent of f as in time. and that's still a lot of potential to protect the climate and prevent flooding.

why and now over to you, do you have a science question? send it to us as a video, text or voice mail. if we answer it on the air, we'll give you a little surprise, is it? thank you. this week's question comes from roughly on nunez from finland. the why do live or is there any occur at the expos and what makes them so colorful? a real risk and take different phones, whether they come dropped behaving cuttings in the sky, old right elongated bands. that depends how turbulent things are in the atmosphere and magnetic field. the,

the auroras to northern and southern lights created by the interaction of electrically charged particles from the sun. with the magnetic field the certain deposit goes hit the magnetic fields at 500 to 800 kilometers per 2nd. this direct deposit goes around to the us. many and that the expos, it's only that the solar policy goes, can hit the layers of the atmosphere. the athens get charged electrically and met tonight, the hallways and mostly seen near the magnetic poles of the us that are specially common in alaska, finland, and new way. know about the colors green, nitrous produced by oxygen athens. that's now that you did around a 100 kilometers. red light is generated by oxygen and even high and

a is that the atmosphere design is auroras' come from nitrogen essence. the 3rd deposit goes have to be very fast to make them play. the fascinating lights can also be seen from space and asked, by the way, it's not the only planet that has a boris the space pat escapes after the spectacle and g to choose on the largest planet and also to assist in aurora is shining. ultra violet, an x ray lights which are rise cannot see the, the, the hubble even detected. ultra violet tours on sutton. they shine particularly vitally at satins, north pole, shortly before midnight. and it on the

but saw from this addition of tomorrow today dw science show. thanks for watching and see you next time, the

eco tourism. eco tourism in times of climate change. the industry needs to adjust it hopes to attract travellers with new offerings and destinations. but the question remains, can you travel with a clear conscience, the most fussy minutes, d w,

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this is the deadline. use live from fairly the rice, the fonts, a 5 is that the earthquake in morocco rescue a struggle to reach flattened villages in remote mountain and regions and only 3000 people. i consent to also coming up to the gym and foreign minister emulated available flags. the surprise visit to you crime, there's an extra $20000000.00 euros in humanitarian aid on the table, but gave us frustrated by delays and were saving along the way to jim and miss aust .