to postcard how to make greener choices in your everyday lives. but honestly, try to do the working 32 hours a week to be better for the environment than 40. but of course we shouldn't be 90 the. the living scientists just had subscribed. whatever you listen to had cost it came from the direction of the sun. no telescope saw it coming. in february 2013 allowed, shockwave blasted through the russian city of chelsea events, enjoying hundreds of people. a meteor had exploded at an altitude of 30 kilometers . it measured just 20 meters across the cost, extensive damage. how can we protect ourselves from the threat of space rocks hurtling towards our planets? that them more coming up on tomorrow today, the dw sign show the

giant asteroid totals towards the threatening to bring huge destruction. thankfully right now, just hypothetical astronaut products on the guest is familiar with projectiles from out of space driven research expedition to on talk to collected meet your rights fragments of asteroids as good. i think a game, of course with very show that asteroids will collide with the know including larger ones. well that we don't know the exact full ability. when it does happen, we'll need to defend ourselves. but 1st, we need to know how to defend ourselves, stuff in this. this would be, that's good. that's why the hair approve named after the greek goddess of marriage, is now on its way to an asteroid. for closer examination, the european space agency pro, or travel for 2 years to reach the asteroid dine wolf. so this will be the 2nd

visit to the asteroid in 2021. and that's the lowest approach. as a test, it deliberately crushed into the asteroid, the so the team of scientists observing from a huge success. the experiment knocks the asteroid. of course. now the european hair approach will study the impact crater on dime office. in september 2020 full on and off craft waited on the thomas cologne bone airport. it was to transport the pro which is about the size of a many bus to the rocket launch sites in the us. the head of the project manager was on hand to ensure everything was done correctly. so today is a very special day uh for your uh, we're writing literally

a page of space history. where shipping be here, a spacecraft, uh to the lawn sites in florida. it is a project that goes beyond march or bates is what we call a means our planetary mission to reach on last. steroids and study and body dates planned very defiance. which means human kinds ability to deflect. asteroids and project clements or hara is expected to on so many questions. what is the asteroids mouth? what is it made of? how long? which is the crate to left by the collision with the nasa approved dime office break apart completely. and it's now just held together by its own gravity. the nasa approved impacts change the asteroids course. scientists know this because dime office old. it says a noun around a logic asteroid. the impact schultz and it's all of it. so instead of 12 hours, it now takes time. office just 11 and

a half hours to over it. it's launch at partner to the have a pro. it was assembled here at the gym and aerospace company o h. b in breyman. companies for more than 18 countries, contributed pulse on expertise. gemini played a major role. for example, the congress with developed manufactured on tested by space company unit of tronic use or for this raw, the inconspicuous rectangle conceals and many satellite or the next level flights are patch. while i've been here in the spring, when i checked to such a light that will fly to the asteroid and sleep, positivity must we exist. this is what it will look like in space. 2 cubes, that's the size of a shoe box will approach the asteroid that gives us will fly nominated for a couple of months now. like for every spacecraft, uh, the end of its life. before switching off we'll,

we'll try some experiments. so you events us with the lands on the more 1st, retrieving the re there and time less, they'll gather information on the gravity field from the surface. if the mission succeeds and full 12 hara instruments function as intended, scientists hope to develop models for defending the earth against asteroids. right now, we don't know enough about them. escaped want to see the others because they do very die. some asteroids and made of rock. while others are made of iron and have a heavy iron cool life to then the run light to comment like ones made of frozen gas and das. so this means this surface structure composition and density are entirely different. so any defense mission would need to be planned and taken to account the. the asteroid is made on the sun. most asteroid federal through space without ever posing a threat to. but if a law adjust royd with a strike,

it could be catastrophic. it was likely an asteroid, the white top, the dinosaurs, for example. but after the head of admission, we should be better prepared for the future. for dinosaurs, best, faithful asteroid signal the end. that was 66000000 years ago. the pre historic giants had ruby earth for some 170000000 years. they were willing on for a 1000 species. some were carnivores, others fed on plants. and we're still learning more. in fact, just recently, scientists and germany made some stunning discoveries. for the paley ontology, 1st at the museum of natural history, instruct god this dinosaur fossil offers unusual insights into prehistoric diets. many of the fossils here like this, excuse or are exceptionally well preserved. munsey,

so you can see the vertebrae of a smaller via so that's what i read, that helps us understand the food chain. so who ate to this small, brightly colored carrier, so it doesn't have an under bite. its teeth and johns are perfectly adapted to scoop up its favorite meal. when samuel cooper studied the fossil closely, he discovered what this creature 8180000000 years ago. very excited. yes it's, it's very nice to look on. some actually quite historic materials that the specimen was collected move and 70 years ago. and in here, this black area is the remains of the fossilized stock. and in the summer, we find the remains of slowly some fish buttons. this small terrace, or with this last on digested meal, has helped to advance kindly into logical research. those will help build the full

we could only guess what terrace those 8, based on the shape of the teeth. but now we have direct evidence of a hill to help and detect him vice paleontologists and stood guard. also made a surprising discovery about the diet of another terrace or bison. all new reset, you know, actually and find the forty's was actually eating, squint, and not fish. so, but it's the right top of the page, but for the wrong parasol. so this terrace army soon have to give up its fish to a smaller cousin, at least until additional research reveals what else these predators might have eaten. there are thousands more fossils and still guard, and perhaps one of them could hold the answer to something on hill. this collection is a dream. all location here is fantastic. we have so many all cannot just go sites go to the next fossilized dinosaur good. my just unlock new secrets, something i think we would really love to find is a fish. it's a reptile,

because quite often we find right cells eating fish. but i'm sure there's possibility that the tables must attend at some point, but we haven't found the fossil rims. but new findings on a par with our fiction squint eating territories, could take a few more decades. it's no coincidence. some terrence source 8 simple upon similar to octopus, is they belong to one of the poles as known. animal groups on her can have colonized the oceans for over 500000000 years. and according to a study by the max block institute of animal behavior, when they hunt, they don't work alone. octopuses are team players, unless they're on the run. although this may look like a fight, it's actually a clever joint hunting strategy. a team of researches from the university of

constance was the 1st to study this unusual behavior in the red sea. they filmed octopuses on fish hunting for food, and idolize the footage with a computer. yeah, the results showed that the behavior of this mixed group is small to then scientists had realized. for me, it's interesting because most of the times multi species groups i've thought of, as you know, way more down than the cause specifics. because it's assumed that only con specifics could have complex interactions and solve complex problems. but what we see, that's actually not the case with its long tentacles. octopus can force praise, such as mollusks and small crowds out of that hiding places. the fish then take advantage of this. by following the octopus bought the fish also contribute to the hunt. tiera read money, it is leading the octopus to

a spot where there's more food. still, it's the octopus that calls the shots. it's not only about being forwarded and fully. it's also being on the back and saying, no, no, no, we're not going this way. we're stopping here or no, no, no, i don't like this option. you have to look for other options. also up to passes. i can see the loan is they do take some of the cues from the fish. so to make sure that's why we were seeing was actually collaboration for food and not those types of behavior. we did an experiment where we put fluids on the structure and we found that when it was struck by fish, destructor was 90 percent of the times of the tank for the because of this, we know that the obstacles is following. the social information used by the fish, the fish a clever to they use the octopus as a tool. the fish are basically using the doctor because there's a pocket knife,

right? because they're finding food. and then looking at the octopus and say, come here, come to this location and try to guide it to the pray. bought the opposite list doesn't let the fish do is they place a fish that doesn't pull it twice. might get a swipe from a tentacle. the scientists are planning to take a closer look at the system of mutual control. we know that there's a species level recognition. you know, it depends knows which ones are the collaborators and which ones are usually the exploiters. but we want to understand if there's an individual level recognition, the team plans to tag individual fish to observe with a recurring person too much in the group social behavior to uncover more of the secrets of this underwater world. so when marine life work together, how do they communicate?

fish are not as mute to stay theme. they make sounds. and of course, the less ambient noise there is the better if they can communicate a lot of marine species are dependent on their hearing to survive. so man made noise poses a serious threat to them. this is what the ocean is supposed to sound like the book today. it's often sounds like this. the, the united nations says under water noise pollution is a major threat to marine life. in northern norway bio acoustics.

expert hike investor has spent more than 20 years studying why oceans are getting louder and identifying the source of the noise was by surprise. we have 3 different hydro phones, and in the back we use a set up that includes a hydrophone, a camera, a recording device, and so on by the german marine biologist as dedicated her career to studying conditions in the left photon islands. you'll see what i saw being critical of diversity of species of whales. i knew i had to come areas with a lot of wells like here in northern norway are good. if you study acoustics, then social animals that communicate a lot are the most interesting into santa. but there's an ongoing conflict between marine life and the sources of noise, much of it caused by humans refunded,

i wish to logical with head straight to line to go out and drop our hydrophone. then we'll head towards boulder. those boats over there, for example, are very noisy. there's safari boats. we'll probably hear them later. along with wales, safaris and cruise trips, military exercises are also on the rise here as we hi. so we'll stop here, submerge the hydrophone, and listen to see if anyone is in the bay, altering the motor off. now, the launch button will to all the underwater microphone detects shown waves, which travel about 5 times faster in water than in air. we're probably hearing the military vessel anchored there in the background because that's what it sounds like on, but there's another boat chugging along quietly here. and then there's the sound of the waves on time. and i have another event because there's something else

to the mean reset and the marine biologist is here. invest fjord is an inquisitive, minky, where would you like to listen, tom? who is there on the various noises here. the boats that are basically always here, the dish finders on the fishing boats, which are a type of cell not. and then there's the military shown are that's very loud, but thankfully less common sense. then there are size make surveys, looking for natural resources like oil and gas. those are air candidates which are pick up here even though they're 300 kilometers away. and other scientists say they can be heard from a 1000 or even nearly of 2000 kilometers away by talking to me, 12 by 2 on con, underwater noise can disrupt the cell structure of marine life,

caused stress and interfere with communication, predator prey, interactions orientation and reproduction, all marine life is affected by a we'll use a sound to see and navigate the dark underwater world or to locate prey. that's what we called bio shown or, or eco location of a oval. the boy to fulfill, then be abused. if the wheels hearing is damaged, it can no longer do this piece of august to be split hot, colorado switch, the most people have done have a strong nation, and it will likely lose contract for the family, which ultimately also means to get. so the way, let's and place it in towards and in norway had planned to open its waters to commercial deep sea mining. but in december 2024 after mazda of protests, from environmental as the plan was put on, hold up here,

you'd think everything's fine. it's all quiet, but when you so emerge the hydra phone, you can us everywhere. our machines are making so much noise and interfering with the entire marine ecosystem and monthly new cost is team. all the recorded sounds are now being analyzed at the regional campus of boulder. university. let's look at what we saw earlier. this is a spectra graham. it also shows the volume is a small thing down here. we see this is almost entirely noise its own rate. if there were any well sounds in here, we hardly see or hear them seen. under water noise pollution is an increasing problem. it's been doubling every decade for the past 40 years across the frequency range. before in the forest and see a dear, we don't move if we almost hold our breath because we know that the slightest sound

will make 50 or vanishes. but when we're in a boat and we see dolphins, we turn up the throttle full speed ahead, which is a nightmare for them. fire gun, wonderful stuff. while i have tone, 50 said to you, but the noise of human activity is diminishing. the bio diversity of our oceans and changing their unique sounds. 2 thirds of the earth is covered with water, potentially offense, supply drawn for drinking water. but 1st the salt has to be removed. one viewer from columbia set just a question about that. how does a decent a nation plant which there was various ways of turning c will to into fresh water. 2 methods commonly used on an industrial scale. the 1st is distillation. from the vacuum precious, the water is heated to a 115 degrees celsius. as the water vaporizes it leaves the salt behind,

the vapor flows through cold pipes, turning to fresh water, but also more than 20000 these on the nation plants worldwide, probably about 20 percent to use distillation. the 2nd method is, was, this was moses. and this method was who is forced under pressure through a membrane. the semi permeable membrane that's water molecules passed through. while blocking substances like salt and minerals, the water on the one side is still free, while the other is very salty. even though the cost of diesel, the nation has dropped it still expensive obtaining drinking water from a 1000 liters of rid of water costs just fine if you are sense. well, just one later up see walter costs $50.00 or cents. in addition, both methods require a great deal of energy, much of which still comes from fossil fuels. but some smaller these on a nation plants can now meet the energy needs with renewable sources. obtaining

45 liters of pure water 3, which is not a nation, requires a 100 liters of seawall to what's left is called find this extremely salty, low in oxygen, and often contaminated with chemicals before it's pumped back into the ocean. sometimes some of the salt sodium fluoride is filtered out, but the broiling also contains magnesium and potassium, which has commercial usage. however, extracting these minerals, it's costly and energy intensive. researches are exploring none of the filters on other methods to see how valuable materials on elements can be recovered from brine more efficiently. what are stars made of? how many colors can butterfly see? robots have babies. one day. you have a science questions,

then send it to us as an via text or voice message. if we answer it in the show, we'll send you a little gift as a thank you. so just ask the new york, use a bustling mega cities, famous for many things. huge skyscrapers impressive bridges, the statute of liberty. but what you might not think of is well, sharp and don't fit the marine mammals have returned to the atlantic coast of new york and are now a common sight at certain times of the year. one local resident has captured impressive footage. while i grew up out here and it's such a beautiful place, and so i always felt connected to the environment and to the beach especially. and so when i saw it changed drastically from one year to another. i wanted to figure

out what was happening so we never saw some box or dolphins, or tuna, or really any animals from the beach until 2019. and that was like the most drastic change. so you can see how back 200 feet away from you. one seating on manhattan is creatures that we didn't even know where are these. i didn't even know we're in new york. in the late summer. how whales can often be seen of the kindest of new york almost every day. so lynch flies, his drone over the shore line of the hampton on long island. typically i'll search for large schools of men, hayden, the bait fish, and see whatever is praying on the mountain. hayden,

the small nutrient rich fish are a vital suit, souls for many low, which means b c's, including shocks, dolphins, and whales. they are most efficient by humans and used as a nutritious feed, and i co co to unpack food 5 years ago, the state of new york, austin long limiting industrial net fishing of money. hayden, near the coast box, along with other fishing legislation for many large marines. b, c spiked to new york's coast. over the years, a lot of atlantic states have decided, well, we're gonna put conservation 1st and we're going to put the health of our coastal eco systems 1st, rather than letting a lot of commercial activity go on in those near shore areas. so that's allowed those predators to now move back into those historical near shore areas and feed where they were, you know, 50 years ago where, you know, we've kind of forgotten about that. all of the atlantic coast works so urbanized

such an lynch as a small studio in this comes i just got rich the photographer and videographer says he's work on social media including footage of cow nose res, migrating off long island. and that's why i'm in this incredible geometric formation like birds lining up based on the parallel sides since they're there, wins the goal or what i've been after, at least the summer is trying to find new spaces and kind of round out the picture of the ecosystem overall and help people understand how diverse new york waters are and how and credible these creatures are a young, great white shock and to have a head shock. those quotes on camera, the category to spanish shops, typically not dangerous to humans. hunt for small fish near the shore line. the

return of the thriving coastal ecosystem provides such a men with plenty of inspiration, he's with that's all for this edition of tomorrow today. we hope you enjoyed the show to see you again soon. the

dimension causes terrible suffering for those affected and is an enormous burden for their relatives. caring for people with dementia involves special efforts. what environment is best for them? a place to feel safe. coming up on d w because the end of

the reproductive medicine and today the rest of the modern lifestyle goes what's best for the baby in good shape in 30 minutes, dw the computer, do you do the change the channel? she survived the ocean bits. thanks to music. he was the nazis favorite conductor positions under the swastika, a documentary about the sounds of power and inspiring story about survival. music

in nazi germany, watch now on youtube dw documentary. like to come out when your married break of gender identities. how does on mental health impact, i love lives? how do we approach money within our relationship? so it is $1.00 of the few sources listening to content about sexuality and sexual matters. i'm liza model that and i'm going to be exploring all listen more in a new season of mine. available on all platforms. where is mohammed? i'm looking for my nephew. give me a decent feeling. we don't know what to screen on. the sub off fled from north any rock and he became one of hundreds of migrants who vanish every year. somewhere in no man's land that lies between veneration. i'm

clear if you choose to come close in a political conflict. when oh, you lost the run. starts december 18th on d, w, the business dw news, and these are our top stories. george's political crisis has deeper into the appointment of a new fall, right? president with close ties to russia. opponents of once again, my side parliament to protest against the form of football. let me call cadillac billy. the current president says she was that done and so new elections are held. palestinian officials say at least 22 people have been killed in the latest is really strikes across garza, many rules so wounded in an attack when.