all the rest of the classify as discussing the talking series about our complex relationship with animals need to be watching now on youtube. d. w documentary, the shortest super stardom. quickly after she was discovered in 1974, the members of the archaeological expedition who found her name to her after a famous beautiful song, the lucy came from a group of hominids closely related to our own. she lived over 3000000 years ago and was afraid like we do. and that's not the only link to modern humans. this time around, we take a trip from the depth of the past to the depths of the universe. welcome to tomorrow today. can you imagine going

a whole day without using your hands as weak volts? human tougher lied more and more on then i'm being able to go on to lex freed up. i'll have to dominate an entire planet. how do we use our hands today? it's just cooking and cleaning when you gave things to people 40. i get dressed with my hands. i brush with these. i do a lot of stuff with my head. non stop scrolling on, social media keeps our hands quite busy in the modern well. but what did they look like? millions of years ago. this is lucy story. she left around 3200000 years ago . let's look at how her tiny hands, my tough shape, the evolution of humanity. lots of cities all her rowing. lucy, take center stage. scientists from all over the world have come to this drama city

to study how to find out how the sheet, how species, who anthropologists have named australia. because apprehensive lift died, a may be health pipes, the evolution of the road that led to us more than humans. so who was lucy really 50 years ago, american onto apologies. donald johansen and his team stumbled upon her bones poking out of the ground the a new kind of human ancestor, one that had never been identified before. and that was given this tongue twister name of australia up here that gets off our inches, named after the off our region of the off our people. lucy's fossilized remains, but on the in the p. o. p. s off our region at the side called a dark, but a blue see lift and volts. now with p. o. p, a. what she doing in germany, whether we're remains are in the national museum of a ppo ppo, but the costs of them all being studied extensively in leipzig. oh, lucy, it's

a big deal. yeah. this is dr. tracey kimball, apparently wants to apologize to house dedicated her life to researching the evolution of law, have all the only 2 of lucy's home phone survive. tracy uses this scientific method to figure out what her home might have looked like. and these are bones that come from multiple individuals. so we're just trying to sort of get an understanding of what her hand skeleton might have looked like this long and short fingers is what we also have. and it makes it really easy for us to do this. and this is something we call precision groups. we can look at lucy's or her, at least the headphones of her speech ease and say, well at least she was capable of having some more dexterity that would be useful for making and using tools to put it into perspective. i am 5 foot 2 bodies, $157.00 centimeters. i'm lucy y 2 is a lot shorter than i anticipated. so if lucy of allies today should be asked, told us my indian from well,

that's the code thing. those are assigned that lucy might have spent a lot of time climbing trees, but wouldn't that may come of a block than human? here as an ancestor, that is clearly a by people is clearly something that is on that human branch. if you saw her walking down the street that she would look more like so you know, a hairy tim pansy walking quite comfortably on 2 legs then. and then she would look like it looked like a human summary, such as pink lucy species might have help give rise to ask more than humans to understand why we put a real chimpanzees call in a try and see these kind of lucy wasn't only evil like us, she was walking on 2 feet. and even though the brain science is almost b, i think very close. yes, they are kind of recruiting joel the high brow ridges. me nice to say she's closely related too much. yes, she is. so it tim pansy skeleton attempt henzy still walks on on all fours and obviously still also climbs and trees all the time as with lucy,

but we know from the neck down, her, her, a lot of her skeleton has changed to be able to carry all of her body weight just on 2 legs. no sound true for found in the side. but lucy was stuck up in a po to. yeah. so this, the aspirants is really yours. truth. that's all the scientists here are trying to find out if yes, what kind of work for australia? because i parentheses my time use don't tools to understand the technology involved on a topic to scientist has my works together. i'm starting the stone chipping and the thing is, i'm not for history. this is dr. shannon mixer and he uses ancient techniques to make stone through. just like on the distant access, the state. the only difference is us gloves while doing it. the at the lose the site, there is no stone tools, but uh nearby at a site called the key code. uh, we found a couple bones that have marks on that. are characters, stake

a butchery was stone tools. and so we didn't have the site with the stone tools, but we have animals that show that they were butchered, wisco and tools. stone tools allowed our ancestors to access calorie rich bone marrow from congress's, supplying nutrients essential for developing natural brains. lucy's discovery goes beyond human evolution. for this, if you open scientists, it's a matter of national pride. it's our history, so it'd be done. so if you might need to. so that's out of being the source of such a pretty shows. how do you think is lucy's shoulder joins display signs of severe injury. tracy reckons she might have died in the falls from a tree, which apparently isn't an uncommon way to go for more than 5 minutes lecturing. pansies long after her death lucy's bones. and those of other members of her species continued to tell an incredible story. millions of years ago,

they might have already been profiting tools, preparing food, and caring for the young adult like we still do today. digging sifting, brushing that sometimes some middle school who were these people are dionte is all about honors thing. the remnants of mine going arrows, one thin layer at a time is painstaking detective board. and it's going on in exotic locations all over the world. archaeologists get to go there to uncover the secrets of antiquity firsthand. sounds like a dream job, but isn't really a small team from the german university of tubing and has come to south africa to find out more about the origins of modern humans. this one, especially rich archaeological site, is located near the small village of sebu. do the work is more challenging than it

is glamorous that many guns in terms of what you mean when you're on your knees all day. it's exhausting. i'm setting my age. it's not easy. but there are many young people who can't cope with it either feeling human lloyd, only some attractive really wears you out. understand even working the said it was that month, 16 through 22. heavy buckets is no cake walk and not to mention the dirt and crimes . skip toggle and come sundays. it's well over 30 degrees celsius and you're just sweating all day just dripping with sweat. the whole time sheet of paper you sit on his dirty, your hands are always dirty. you can get used to anything, but it's not very much fun. it's i, it's, this is me so sure. the researchers sometimes pause briefly to wash off the worst of the dirt, but then it's back to work as

a doodle is walton who is incredibly rich, an artifact m, as in a bucket from less than 10 meters down. and you can have a 1000 even 2000 of them. fines are amazingly done to yours and on the, for around 100000 years, people have regularly sought shelter under this rock overhang. and they left behind many different objects and pieces of debris that are now being brought to light by the excavators are, can you, can you begin watching? the ology always starts with geology increments. you can only gather information if you're acquainted with irrelevant layers. you can see there's a kind of rock roof here because sometimes large blocks fall from it, but sand trickles down all the time, creating natural layers, usually a very slow process along some over tens of thousands of years. the erosion of the

rock has piled up layers of settlements, several meters high on the rock plateau. the layers haven't been dug up, nor if they've been disturbed by earthquakes or other seismic events. so the deep or the layer, the older, the find. they can be dated as older or younger based on their relative positions in the settlement for pretty straightforward system that can be used to determine the age of fines from a particular layer. how old or artifacts that come from 5 meters below the surface . for example, you can my minimum, you can assume they're at least 80000 years old. but how do archaeologist know that figure is correct? researchers have developed a range of methods for dating ancient fines, but the radio carbon method plays

a central role in archaeology. it can be used to elicit crucial information about the age of even tiny sliver as a phone. the technique is based on the decay of a certain isotope that all living organisms take up in the course of their lives. and some of it is stored in bones and high tech labs like ones at the cord angle horn center for arc yamma tree. and manheim, the age of old bones, can be determined with astonishing accuracy whether they come from a mammoth that live during the last ice age or a cave lion. radio carbon, or carbon 14 dating, allows researchers to pinpoint when individual animals lived. the method capitalizes on the fact that all living organisms absorb carbon and incorporated into their bodies. carbon is practically everywhere in the environment,

including in the era around us, a c o. 2 standard carbon atoms are made up of 6 protons, and 6 neutrons, giving them an atomic mass of 12. so they're often called carbon 12. but there are also isotopes of the element that have one or 2 more neutrons. so a greater atomic mass, they're called carbon $13.14. although the number of c 14 items in a sample is low compared to standard carbon atoms, they're very interesting for researchers because the isotope has a special property, carbon 14 is radioactive, with a half life of around 5730 years. together with the normal carbon plants also take up tiny amounts of c, 14 from the air and incorporated into their tissues that can pass to anything that each the plants had predators that feed on the herbivores also take and c 14,

which can end up in their bones when an organism dies, no more of the isotope is absorbed, then the stored c 14 begins decaying at the known rate. so if you measure its levels in an ancient phone and find only about a 60 at as much see 14 as a modern bone, the find has to be 32000 years old. but how do you get to the sea? 14 stored in the bone? how is it measured? the process is a complex and labor intensive, one ronnie, fleet division, his colleagues, carry it out in the laboratory and mannheim to uncover the secret of an ancient bones age. it has to be at least partially destroyed, a sample taken from it as 1st placed in an acid bath, dissolving the calcium carbonate into bony material and leaving the hot find elastic college. and that's where the carbon is stored. after this treatment,

the bone fragment looks elastic and spongy. it's then freeze dried, giving it a company look and texture. and the next step this is incinerated in a device like this at very high temperatures. the black powder left in the end contains the c 1213 and 14 from the bone. this powder is then pressed into a kind of cartridge. the cartridge is loaded into a magazine that contains many different samples which are tested for a carbon 14 contents. one after the other, in this particle accelerator and vs void them and these are might, if we use this machine to measure the carbon still present in a sample today, we can calculate how old it must be based on how much carbon 14 is still in it. just opened up all of this in the cartridge to be tested as placed in

a kind of combustion chamber. bombarding the sample with cesium knox, the carbon atoms out of it, and charges them electrically in the tubes. the atoms are accelerated to very high speeds through the application of a high voltage and passed through 2 mass filters. the 1st stops everything with an atomic. now some 12. the 2nd, everything with atomic minus 13 only carbon 14 makes it through to the very back of the machine. depended on by the individual carbon ions are then actually detected in the rear area. so there we can count individual carbon 14 particles sienna. to calculate the samples age from this number, you need a reference point. so carbon 14 from a sample with a known age was a stand up for the our reference bones come from horses that we know died in a viable in $1644.00 during the 30 years more implies that. so we analyze these

horse bones in the same way as the bones we want today of the onset. it's not using the same chemical process and the same analysis here in the accelerator on some scale. in the end, once we've dated the sample, we also have to come up with the year 1644 for the horsepower, and we always do this. all right, now it's your turn. do you have a science question, then send it to us as a video, text or voice mail? if we answer it in the show, you'll receive a little surprises. the thank you. go on just at this time. the question comes from don, u m m. in bulgaria. why is our home galaxy called the milky way? the roots of the name can be found in the words deluxe us, which comes from ancient greek. it's derived from the terms gala and galactose,

which means milk or milky. in those days, a little light pollution. our home galaxy was visible everywhere is a bright band and the night sky. there were no telescopes, the ancient greeks explain the origin of this milky road with a story. according to miss some milk poured into the sky from the breast of the goddess hair when she pushed one of her husband's bill legitimate sons away as he sought to suckle. over 2500 years ago, the greek philosopher democritus came up with another explanation. the world is made up of tiny particles, he said, so the band of light in the sky must also consist of particles which we call stars . hundreds of years would pass before p could actually see individual stars in the milky way. then in the early 17th century,

dutch spectacle maker hun slip a hay, made a ground breaking discovery that distant objects appear larger when viewed through 2 ground lenses. laying the groundwork for the invention of the telescope got a nail gun and a develops the instrument further and was the 1st to use it to observe the night sky. there he saw that the milky way really is made up of top less stars the since the dawn of the 20th century astronomers have been looking deeper and deeper into the universe bright dots that their predecessors. so in, earlier ages turned out to be distant galaxies, our cosmic home is just one of around a trillion aggregations of stars that are thought to populate the visible universe

. but it's the only one called the milky way, a mystical name from the ancient world. the, it's always starting to look out into the milky way on a dark and cloudless night. but what's perhaps more interesting, it's what you don't see. like what's called dark matters, which at least in theory, ensures that galaxies don't just fly. a part. studies looking for the elusive material are ongoing at the european organization for nuclear research. for cern. a gigantic new super collider being planned, there might help find it. the future circular collider or f c. c for short is a particle accelerator that could break new ground in the field of physics, plans and vision. it's construction on the border between france and switzerland, and a tunnel deep under ground,

around 3 times longer than the large hadron collider, or l h. c. current estimates say the memo. it's project would cost around $15000000000.00 euros and take around 25 years to go into service. at the moment the fcc is still in planning, but storing research director, you often manage firmly believes that will happen to tyson physic town cern is a european flagship project in particle physics. i'm project, it's a project and area where you are plays a leadership role and been with, if we want to retain this leadership also in the future and noticed that we need a new project that will succeed d l, age c on one. that in my opinion will not only carry science but also cern and europe into the 2nd half of this century. yeah, that's great. in this future, f, c, c, electronics, under anti particles, the positrons would be set on collision courses. and it, it allow

a kind of factory for higgs bows on, which are apparently a key particle. the rest is still a dream. a 2nd expansion stage would utilize technology yet to be developed. from the 20 seventy's onwards, protons could start colliding and at an unprecedented energy use, a machine built for discovery with potential many times greater than physicists have access to today, says manage it. really, it will provide answers to the big questions that are currently on answer like dark matter and dark energy. some of why does the universe only consist of matters, whereas all the angie met are gone. i'm to my to hear you. but it is the new accelerate or the right instrument to answer all these questions. some scientists have doubts take dark matter. for example, astronomy, olive and i had searched for the mysterious material for years while the fcc help

him all the time we built new particle accelerators again and again, and have found nothing so far. there's a lot of this illusion, but i'm not sure. and we'll find dark matter with an next accelerator either, or instead of doing the same thing just bigger. so maybe we should be considering alternatives like we could invest more in gravitational waves or telescopes, or throwing telescope. dark matter has been giving researchers headaches for decades. we can't see it. we only know that it exists because without it galaxies would simply fly a part. but is it a kind of particle, or maybe something else entirely? the astronomer is looking to space for answers. does change that, but the james web space telescope has the immense advantage set at a fraction of the cost in allowed observation in the 1st few days, which if they prove correct, will turn the idea of dark matter completely on

a to pick up the culture and building another research or thinking about alternatives to the fcc is jenny list. she develops accelerators and experiments, some together with cern and says the discussion about options is essential success . i'm fussy. the fcc is a fascinating project that would secure a long term perspective for cern. us, however, there are concerns as to whether the prospect is financially viable ones. and it's still not entirely clear today whether the technology will be available for the 2nd expansion stage in good time. and at what cost and costs. according to list, a linear accelerator would also be enough to investigate the higgs. suppose on that a 3rd, the fcc is legs. i'm much more cost effective alternative. but many researchers at certain want more in the search for new particles. the increased energy of the 2nd

expansion stage would be key and that requires a ring. however, no series currently indicate that there's anything at all for a particle physics to discover in this super energized range. you all can manage counters that this is exactly what basic research is all about. the scope of yeah, it's mentions and i believe that we as humans are a species that has the opportunity to think about the universe. it's beginning today's universe and perhaps also its end collect office in the past. i think that somehow is because we have the opportunity. there's also a kind of obligation to do it as to whether the cc makes sense is still being debated. whether the project is even feasible, or whether alternatives are available should be clear by the end of 2025. the exports are and thinking about another alternative,

no new future project at all. that's not how they work. and how i last and just pull. yeah, you have an ongoing project in which you're doing science and you're also preparing a future project for which you are developing technologies. so never, once you've squeezed that project scientifically for all it's worth 0 ready and the starting blocks for the follow up project time from and then stop push on student. i know that 15 deal again. sounds like a lot of money. i think that's the i'm, but it's an investment that will pay off probably until the end of the century. over the next 4 years, the $24.00 member states in the organization will decide whether the giant accelerator will receive funding as the next big thing for cern. and the field of particle physics in europe. that wraps things up. thanks for watching and see you again next time on tomorrow

today. bye for now. the, [000:00:00;00]

the fact that dash, the result of jen z protest is have toppled the regime cost of many lives. now they want to assume the country leaders and the student want to have as will the transitional government achieve the democratic change that according to close out in 75 minutes on

d w the taking me to a new clue. it means happy when i was 8 years old, i was already dreaming of a future as a senior or something i wanted to become. the funeral of my family, which is dream was within reach. she'd become a star in turkey overnight. been a mind, took everything from with the help of his family and music. she rebuilt her life and then his sister also became a family scholar by hatred and mother and the daughters. i am willing to work for change and also so i will sing my song, pay well by mistake. this injustice will not go unpunished. maybe my voice will be heard back spring to. i'm seeking justice for the victims of sam assigned

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old, we can be the generation, the ends that feel good. malaria must die. so millions can live the this is the w news live from balance is there any media is reporting, but the countries cabinets has agreed to a cease for it in the world with has been lost in less than a prime minister. benjamin netanyahu is, has warned that israel would respond to any violations by hezbollah. we will bring you the reaction from favorites, from jerusalem. also coming up on the program, donald trump signals a massive shift and us trade policy. when he returns to the white house,