the slides, germany ugly, with an energy crisis linked to the war in ukraine. sites that have been eliminated, include the brandenburg gates tv tower and puts them up. that's events organizer see it uses 75 percent less energy than last year. and all power used comes from renewable sources. and you're up to date. yeah. on d. w. news. next up, we look at the microscopic create chest. i call our bodies home. in our documentary c, s series dock film stager. a vibrant habitat ended go listening place of long the mediterranean sea scene of l muster. and to far abdul karim drift along with exploring modern

lifestyles and the editor ringing and he's ready to lead journey this week on d. w. ah, even on you is a well have never seen her around with bizarre creatures that lead on and in, if free part of your body is an animal is on your phrase, and we don't know very much about it yet. they are affecting us in ways we never imagined. but now, for the 1st time, we can explore on. if we got rid of all the microbes on us and inside us, we would die. you and with each and every one of us is a connection, a different life. they call us hi. this is life on

you. i'm lucy, not you you. i'm to an astounding way of my phones. 2 some creatures hide inside to bounce. this picture view from you. i brown. ah, there are gardens funky on your feet. alien tribes inhabit the jungle of your hair. tiny might find your face. ah. and you highest more bacteria. then there is a way you and to box foreman with life.

in fact, bugs are us. where every day these typical family is home to a 100 trillion hitchhikers on their skin, and inside their body. these invisible colonizers keep them healthy, sometimes make them. i was brain and even influenced their behavior. stop fighting yet until recently, we understood very little about how microscopic residents germs have a bad reputation. we think of them is the cause of disease. but paradoxically, we couldn't survive without them. bacteria are bad, they are cleanser bad, all this stuff growing on me as bad, but just new kid in majority. those organisms actually good for us. they are

assisting us. they're not our enemies ard session with bad bugs. left us blind to the good. but now genetic tools allow us to see what we've been missing. molecular tools, sequencing dna, have allowed us to get a true picture of what organisms are there. and as a far richer picture, than we had previously appreciated via altering micro residence. by decoding the genes of these microscopic creatures, we can reveal a new microbial world. the genetic tools are kind of like the new telescope. think of it as a geographer. that might have just been studying the fields around neu, their whole career. and then somebody says, oh, by the way, we just discovered the americas and australia and nobody had ever heard of it before. for the 1st time, we can see the microbes that leap on us. and inside us, it's been like

a gold rush at the moment. it really is a voice rolling. the bang scientists have embarked on a journey into the unexplored world of our own body. they are discovering how we are shaped and kept alive by the bugs that live on us. does. the crust covers planet. the skin covers the body and impermeable barrier between us and invading gen. wow. but we only realised just how important it is when it's compromised. i see people's lives changed in an instant on a daily basis. the owner would is a world leading burns specialist. her struggle to save lives is all about beating pathogens the microbes that cause infections. we have bacteria and pathogens all of

his all the time. when you have a breach in your skin, there's a way in and that way in is going to be there until we seal the wound. so the longer the wound is it is open, the greater the risk of getting infected. so what we want to do is close that surface, seal the surface of the wound as quickly as possible, while the waves of infection keep coming over. if you waterproof, you will survive. and central to that survival is the layer of my credit set live on our skin, like the atmosphere that protects our planet, al my quips for me, shield against alien invaders. if some pathogen arrives on your skin, it's not your immune system that rises up to greet it. the 1st thing that greets it is this microbial layer this, this hairy invisible cloak. but we're to these box come from.

oh, nice in. it's with a baby. the womb is, is so the tree world. what outside anatomy of my crypt awaits its arrival. ah, me, you're born your colonizer your mother's microbes. until then you can be called a 100 percent human. but after that moment, you're really just 10 percent human and 90 percent micros, which is

a scientist is very, very exciting. but as a parent is terrifying, i oh, towards the end of pregnancy, the bacteria that lives in the mother's gut migrate to the vagina ready for the baby to pick them up as it slides through the birth canal with being covered in the journal, microbes may not seeing much of the treat, but it's a gift that last the lifetime. these bags not only protect us from infections, they're essential for our overall health. they also have an important role in regulating the immune system. the immune system never rests. it sells constantly patrol bodies to eliminate pathogens,

but is palla can also be dangerous. it can potentially damage your own tissues, and therefore it must be controlled, it must be turned down, it must be regulated. the immune system has an internal police force keeping it under constant surveillance. if you don't have a properly regulated immune system, it becomes trigger happy. it's attacking people's brains is attacking people's joints and giving them arthritis, or it's attacking the contents of the gas. and then you have inflammatory bowel disease or it's attacking trivial quantities of pollen, all dog dandruff or whatever in the air. and that gives you allergic airway disorders. and what keeps our immune system in chick is how my gripes. so that if you have that organism in the god, you have mo, mo, policemen, more regulation, more control of the immune system. so it doesn't get trigger happy and do crazy things. the supply of these microbial regulators doesn't stop at beth.

the mother continues to deliver hundreds of species of bacteria in her breast milk . and it's only very recently that it's become clear that breastmilk comes with a whole suite of microbes that have moved up through the mother's body through the lamb end of the mill. and come as part of what goes into the baby with the breast milk. breastmilk also contains sugars that the infant can't digest these and like fertilizer for the baby's rapidly developing got flora. and the breast milk becomes as really amazing example of the way in which our body is actually evolved to help these microbes to the next generation. by the time a child is 2 and a half, it will have to been a fully mature, microscopic community. collectively then known as i'm micro biome, there is much about of us as any of our own organs. every one of us is

a finely tuned society of many different life forms, relying on one another for survival, but burned just beginning to discover new species. in the most unexpected places, this little dog could determine your health ah spectacular. between the mystery and we know much about the body parts of the body elite others. i try some

a hot dog and exposed to light cleo williams, a different clean. mm. ah . and just isn't on the human body to life, adapts to the environment. i started working tropical forests and every process i could study and tropical forest is happening and my body in your body right? ah, yes, species that are plants. if species that eat those plants and you have species that those species, you're species that are predators. yes, fishes, that are parasites. there's active competition just the way the tree roots grow against tree roots or ant colonies grow against air colonies. that same thing is happening. ah,

not didn't background inequality repeat him. we'll turn explanation at the want. a damn bit armpits, this weird thing. so why does it have hair? why does it smell funny when an earth is going on with that, is it's a pretty specialized environment. it has high humidity levels and there's human apron, glands, and these are glands that don't really produce sweat. they produce what i and other people think. it's actually a food for microbes. it is an odorless food and is released an incredible density out of your arm. pet. arm pits ended up themselves. have no order. your hair has no order. most your body has no ord odor. those orders are all microbial bacteria thrive on the perspiration. released by our 8 the green gland. but they aren't

active until we reach puberty, which is by baby smells lead. teenagers done. the why are we feeding my quote in our own pits we have here we have parts of answers and other species beamers of the same glands that kind of go across the chest. and in that case, the lemur seem to use them for identifying each each other. are you, my cousin and our cousin buddy are to help the lima to determine if a prospective partner is too closely related. sexual attraction is literally about chemistry. other mammals don't had their glands in their own pages around their amos and sexual organs. it looks like as we started to stand up more and as we interacted with each other like this,

that if we were going to sniff each other, the hair and the smell had to move off. many on pits have a major influence on how we date and mate. it's much as muscles or became east that brings men and women together. it's the smell about personal. wow. bacteria strive in every nook and cranny of your body. and one of the richest ecosystems is your navel. it's a tiny crater, the scar that we carry through life. and we barely give a thought to it. but the scientists at the north carolina museum of natural sciences. the naval is a place of infinite mystery. this is the home of the belly button bio

diversity project. hundreds of volunteers have been recruited to toil a cotton swab in their belly button to help to find new species. by the power of our research comes from the fact that it will be able to sample so many different citizens as scientists. and you kind of can't harness that power unless people are engaged in the project. welcome to the daily planet theater. this ryan mellow glo bills himself is a microbiology comedian. we'll be talking about some citizen science projects and about the light that lives on us. we'll be talking about tiny life, which is really fascinating and infectious disease walked into a bar. the bartender says, we don't serve infectious diseases, this bar, the infectious disease as well. you're not a very good host. i can make you laugh. maybe that'll make you more open mind into the subject, and maybe don't make it more memorable. and we want you to take the rob and be really careful. i'm just gonna lift that is nice and good. you know we got all the

micros out. yes. all that's happening. you're actually get individual living organisms on the belly button is calling with life is protected from the chemical warfare of soap. and it's usually covered up from the ravages of weather, all of which makes it a prime. in the discovery of new species, one person was carrying a form of a cake life only ever seen before in the most extreme environment on a in deep ocean. what's interesting is that if we look at bacterial diversity in the human belly button, we have a huge amount of variations. you know, among 60 individuals, there was not one species of bacteria that was found in all 60 of those individuals

. micah with no patterns, fingerprints and the dna, the wildlife, you know, belly button is, you know, it's al microbial signature. but it's in a constant state of flux. the places we go, the food we eat, the paper money. they all affect our micro veal jungle. so far, the north carolina team has identified 2300 bacteria. is that 4 times the diversity of all bird species in north america. and this abundant tavis has come from just 60 belly buttons. some people have hundreds of species living in their belly button. some people have as few as sick species living on their belly button. and having fewer species on is associated with poor health outcomes.

just as we need bio diversity to support life owners, we need a variety of micro organisms to god. the health of our human. he crises, timms on each square centimeter of use cubed. they're moving 1000000000 bacteria for them. it's a land of abundant plenty of seats. pies you see t 124-0000 dead skin cells every hour. that's 2 kilograms in a year. part of what they're consuming is our dead skin are dead bits. and so there are some decomposition happening, they're, they're, they're at war with each other. and so even our good bacteria are actively fighting each other, producing antibiotics. they're all trying to win. none of them want to just be confined or armpit right each and every species. they would all benefit if they could colonize us from head to toe. one of our microscopic residents engaged in

chemical warfare is priscilla's septimus. they patrol the skin looking for funky to attack without then we'd wake up, covered in mould. other migrates, like steph lucas epidermis colonize our skin in numbers so vast that there is little room for invading rivals. but the true power bacteria comes when they act together. and dis, coordination requires a special language. their genes are encoding proteins that are allowing them to talk with each other and to detect each other and to control each other's growth and basically to allow other bacteria that are more beneficial or less competitive with them. you know, to grow a greater abundance. by tapping into his cell to cell network, microbes conspire with their own species and build alliances without the bacteria to outsmart invaders. bacteria,

the most successful organisms on earth. and part of their success is that they're able to steal the genes they need to adapt and thrive. they're able to change their genome very easily. and so this is why it's really important to study the bacteria that grow on and with us and in us to understand essentially what is the stable state. because when a pathogen emerges, it's often, you know, one of these typical bacteria that have co love with us and have been not a ha one until who they picked up something perhaps we were virus for. and when i live at pier him, who knows why, and now they just changed the game. this genetic flexibility can transform how harmless migrants from dose al skin graces them to vicious killers. i suddenly felt very ill. and i went to the, the gentleman's toilets and basically i collapsed on the floor. but how can a tiny bacteria destroy a healthy body?

in just a few, alice found to focus in a visit to an alpine result became a life and death struggle with a rope pathogen. i was vomiting and had blood coming out of my mouth and nose of all sorts of strange places on my home, and who had a quick swing at midnight help, who completely unaware that it may ask him that you had already printed his body. the bug was strep, be bog, actually got in through a cox on the leg. and i was having a raw gauze attack were effectually where the body gets overwhelmed by bugs. and you go into a constant shaking and i ended up pat garnished cotton kitchen hospital. over the next 12 hours, i must have had every test known to mad. they just didn't, they walk. the problem was eventually, after taking blood couches, they discovered that i had a structure called b infection. and then over

a period of 3 days, i was given increasing dosages of different types of penicillin. but nothing was working. it's like being in a canoe and going down the niagara river if we're in it early enough, someone can rescue us. but if we're far enough down that river, eventually thing is done to help us. and unfortunately, that's the situation we have with these invasive infections, where at the very last moment we have to get a surgeon to get in and remove that destroyed tissue. the surgeon said, we're probably gonna have to advertise the leg. the infection is spreading in the main artery and if we don't get it, it's going to go to your heart and you will be dead. i remember saying to the surgeon as i went into that operating theatre i can do without a leg, but i certainly can't do without my life. flesh eating disease is an infection that

literally eats way through the layers of tissue that surrounds the muscles. and it's fast, it can cause death within 12 hours, it can spread amazingly quickly. sometimes we can even see it before our very eyes . this bag need serious vigilance. 160000 people are killed worldwide by this bacteria on slow it. it free. yeah. i still have my leg, i'm, as you will see on actually still have it the aftermath of all of this is a, i have to take care of penicillin twice a day. and that has its implications as well. because unfortunately, over use of penicillin tends to cause some killing off the good bugs that sit in the gut. and then i, i ended up with other complications as a result of that. these are dreadful infections to go from a perfectly healthy person, one day to dying,

or only being saved by very aggressive surgery is an indication of these bacterias are potential for harm to us. but what could turn straight to cookies usually no more dangerous than a sore throat into such an aggressive killer. micro biologist, professor mac walker, was intrigued by the mystery. ah, it was quite a surprise that being quite low levels of very advise of diseases caused by this bug. with some ingenious genetic detective work, professor woke, attract the origin of the deadly disease in the midnight ideas in the rocky mountain region of the u. s. there was an outbreak of flesh eating disease caused by strep to caucus. this outbreak was investigated. and what was found was that a new group i stripped a caucus, had come on to the say,

which was more virulent and better able to cause, advise of disease. this virulence was caused by a virus called bacteria sash, which invaded this strength and modified its dna. it inserts its genetic information into the bacteria, and that's the re programming that takes place when a bacteria fire infects bacteria. luckily, the chance of catching such serious invasive infection is still small. usually where able to live with these bacteria within out thrives were on our skin without getting disease. so people should not a are freaked out on the next time that have a sore throat. are because that's just a normal event and our immune system is liable to deal with a very adequately blue. ready most of the wildlife on our bodies is hum,

ask if we might be horrified to discover what they get up to. ready meet the tiny, parasitic mighty god dammit next me. he takes up residence in your eyelashes borrowing head 1st into your paws there this long sort of narrow things come on at night when you're sleeping. come out on your face and have, have sex, and then crawl back into the poorest. it's an animal, it's on your face, and we don't know very much about it that that's enough for me. rob dunn's meat kill, might protect, is trying to shed light on one of our most overlooked hang his own. we can ask questions like how to might some one human population relate to those another human population. pacific islanders, they have different might species as a function of the relatively long isolation from, from other people's, an aboriginal peoples of australia. what to their might look like,

how these might change. does our faces have changed? it's super exciting. people get to see whether or not they have might, people get to see what their look like. what to go back to that because they're gonna try to get in years or a t though and one of your wifi in the minds offering. well, you know, i don't think so because i think they like to cling to it even sign the chords on your feet. it's always good to know they're clean. i think they like to live in the oil and you're so basically it feels like good oil out here, come and get it. they eat boil from our pores. you're probably also eaten microbes . they probably have a pretty specific suite of microbes in their guts, which are sort of just, you know, little hints about what's going on there. as it turned out, bryan's face might have made a significant contribution to science. this is the 1st time might have given the field, giving that they to a pull it up my fit. wow. to my,

the truth is, is you're not really separate from these critters like who you are is defined by your interactions with other speech. what would we be without them yet? what will we be without them and who are we when we have bad species? and so, for example, to take a really extreme example octo plasma gone, the i said, is this produce that gets him to the brain. and when it gets new, our brain, it changes what happens in our i talk to a classmate. gandhi, i is a cunning parasite. it's a real life somebody bug. and it's unmasking is one of the strangest stories in science. ah, newly self respecting mouse skis? well, clear of anything that smells like a cat. but for mice infected with a zombie bog cats, i like a magnet. mice, pickup talks a plasma every soil,

but to reproduce. the parasite has to find its way into the intestines of a cat. and the best way to meet up with a cat is to alter the mouse's natural fear and make felines fatally attractive. ah, the brain was right. it is now easy prey. but it's took to plasma. that's the real winner here. once inside the cat can reproduce. ah, the trail of the zombie bug lead to prague and one of the world's oldest university professor years. la flag is a renowned specialist in the study of parasites by a complete coincidence. just as he was looking for a new subject to study,

he was tested for talks of plasma and the result was positive. i was not very happy to be infected by some are as i've ah, but so in the same time, it was very interesting. i mean, this idea that it can explain a, some behavioral pattern of me. nunley psycho is a cautious person. but he began to exhibit some theory risky. hammonds, not unlike a mouse who is attracted to cats. for example, i am not very afraid in situation when i should be afraid. it's so maurice strange behavior. oh and for example, i was in court a storm and there was a lot of shooting around and i was quite calm and it's not the only separation. also, my startle reactions are little bit unusual when somebody hit

the horn behind me, in some traffic, i stay in the same place to look slowly behind what would as happened before flag. no one is a source of linking human behavior to talk to plasma infections. and the flag is hunt was right, it was missing with the brains of many other people as well. i started to study this. i foresee this on the cheapest material, which is available here. i mean, on our students and 25 percent of them locks obama infected. these studies show that those infected by the zombie bug was far more likely to put themselves in risky situations. the risk of traffic accident off of the plasma infected subjects is about $2.00 time higher than the risk of traffic accident

of non infantry. the implications of this discovery are unsettling. talk to plasma is one of the most common human parasites. he used to sing, that's our mind, this really our but our results show that maybe it's not through we can be infected, biting, unwashed, vegetables, and under cook me number in some countries it's relevant in france, we barely cooked latest popular infection rates are as high as 55 percent of the population. so the next time you need a reckless french driver, the where it may be is on the bug behind the wheel. ah, the here on your head is the equivalent of

a rang forest shaded moist and rich in nutrients. it's the home for an annoying little critter. the hitler house. there are really interesting evolutionary stories going on on our bodies. and so paralyzed in that regard are fastener in head lice, a living fossils. they are, the ultimate survival machines. lie approximate. they appeared on a some way in the region off 815230 1000000 years ago. this means that they predict the great extinction of it killed off dinosaurs and wiped down the 75 percent of all species at london's natural history museum. doctor vincent smith takes a special interest in these blood sucking parasites there about

$5000.00 species of life in total. this one here is a human head louse. this is a female, is highly adapted to living on humans. so they have the thick, sharp claws, and a groove under the louse where the hair sits to the vacant clean home. lice must lives on the host. if they follows. that's it. they're dead. right at the front is the mouth where tiny shop keeps jets out. they find a blood vessel and they feed on the blood. yet, despite these advanced features, lies can't walk, call or fly. they leave flow lives until we come together. when everybody wants meet lice, don't miss the opportunity to jump ship. one of the reasons why light spread

particularly quickly and young children is because many of the social barriers that we would normally have as adults don't exist in young kids. you'll see them touching, hugging each other all the time. and that is a perfect medium for the transfer of life. in a school wound, head lice can pass over several heads within a now. for head lice can be really difficult to get rid of. almost none of the traditional insect a science will work and you have to use other means usually physical means simply to get rid of allies. but lice, and more than just in the rotation. they've changed us in fundamental ways. one of the striking things about the human body is it's hairless. so

was an evolutionary breakthrough, a warm hug on a cold day that allowed mammals to living conditions, 2 hostile reptiles and beds. and once he revolved a 120000000 years ago, he was really na, st. yet we ended up virtually, hence why some people think that it saw a, it was actually to help ah, lose our lousy infestation. so there were few extra parasites lice, and please and other things because they comp and he cling to a naked skin. a fairy coat is a safe haven to takes. lice plays and other bloodsuckers. and in not only annoying, but some of them can carry lethal diseases, weiss and poison, and there can, they don't kill us and enough themselves. but because most detector parasites take our blood, the also have the capability of transmitting disease. and so that those individuals

who had less fur were actually at a reduced risk of disease from these actor parasites. carelessness was an attractive sign of good health, just like the bright to me to that is an advertisement for being free of parasites . it was faded by sexual selection and they seem to know that the naked genes pass down to the next generation an ever since we've become obsessed with renew thing. we spend billions annually on razor blades and getting waxed for some parts of our body. i, harry, this puzzled professor, robin weiss at university college london. why the we have cubic hair, my guess and this is just hand waving, is the pubic hair, isn't just the remnants of when we were fermi. ah, could pubic hair if evolved,

then to indicate that mating could be fruitful to the clue to this puzzle. if those pesky parasites lies with it was assumed, the pubic lies were a close relative of headlights. which makes sense if they both came from the time when we were fairy all over. but on closer examination, the tune couldn't be more different than the crab. so perfect eyes have these great big calls to class round course hairs. they couldn't live on our head, which means we got them and pubic hair after we lost our closest known relative to the human cubic laos, is the gorilla, her laugh guerrillas have called here. and i was lisa of any already adapted to live on course here, like pubic hair,

should they get across to humans. and so it looks as though around 8000000 years ago, an ancestor of modern gorillas and, and one of our ancestors came close enough to exchange life. that must have been some close physical contact for us to have a quiet that louse. what happened in that moment? only the only the girl ancestor nor ancestor? no. i suspect it was, it was a little bit tawdry. i mean, the suggestion is it was sexual one things vishal, one way or another. we got crabs from them since then. genital nice and traveled the world with us. but now in 1987 to 7 brazilian women, the assistive opened the j 6 to 7 to offer what they had done. the brazilian wax,

the complete removal of hair from the pubic area. in only a few years, this form of waxing has gone from the exotic to the every day. it went like a long way people coming from television some all over. they want to know what is this? it's the most successful innovation in hater seeing since the permanent wave. but this addiction to the brazilian is actually threatening pubic life with extinction . you take away their habitat and they can crawl on, but they can't hold out. i feel very proud of all south that they might be extinct . it's ugly, it's ugly. i imagine a whole suite of species like this, but that we're used to holding on to us. and then as our, as our hair fell away, they lost their habitat. we use old t listening to read ourselves with parasites,

exposing our dark skin to the african sun. but as we ventured to call a climate asking became we oh, these differences in asking come to our interaction with the bugs that meet on us. these are very fundamental aspects of what it is to be us that are plausibly linked to this little organisms that crawl around on her skin and hang on to our firm. we are not alone. box have been a constant companions. the hidden force behind your health and even your bag. whatever you are, you owe to them. my clothes have been the making

with me on friday. i august 21 at the global media found 2022 to go. yes. usa can across with we to work with creative from

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watch it now on youtube. enjoying the view and come take a look at this tv highlight school every week in your inbox. subscribe now. ah ah ah, business dw news that live from berlin and badly striking se ukraine rescue workers local survivors. after the russian barrage hits the city of suffer, easier, local authorities reports multiple beds with thousands of people injured. also coming up.