And the continent of africa on the move stories about motivational change makers taking their destinies into their own hands. D. W. Multimedia series from africa. D. W. M. Dot com africa. Welcome to tomorrow to day the science show on d w coming up. Is there a scientific way to tell how old somebody is can we measure the aging process or even slow it down. Fish that small and why they are bellissimo no viable complex teen. Flying robots in disguise sent out to scare unsuspecting. The Epigenetic Clock is really only the beginning. Of what we want to do now is see if we can use these clocks to determine how molecules or genes are affecting the clock. Does that work its prime force the. The mystery of why we age is still unsolved but the first veil of that mystery has been lifted. Slowing down or even reversing the Aging Process Scientists might not be far from finding the answer but even without that our average Life Expectancy is increasing. Its estimated that in one hundred years time it will have increased by some thirty years there are many factors that contribute towards our lives span some of which are simply out of our control. In the lottery of life
good genes or a top draw a gift from your parents. People who survive well into old age are more likely to have children who also have long lives. The reason is in your genetic makeup. British researchers have discovered genes in seven regions of the brain that are directly linked to Life Expectancy. One of these genes for example plays an Important Role in the immune system. On camera such extend our longevity. Wild life style an environmental factors obviously play a big part thirty suggests that twenty to thirty percent of the variation in lifespan is genetic. A persons gender also plays a vital role when it comes to Life Expectancy. Women live longer than men globally
by an average of four years. When the two genders lead near identical lives however that difference is not so for now the. Nuns and monks live under similar conditions. Here to the women outlive the men. But by an average of only two and a half years. Our genes could be a factor here. Women have two identical x. Chromosomes men have one x. And one y. Chromosome if the x. Chromosome is damaged they cannot be corrected by the other as is the case in women so men are more prone to genetic defects one hypothesis is that testosterone might also play a role in the prevalence of Cardiovascular Disease in men. Nutrition also affects our Life Expectancy. A good diet is crucial to Overall Health and
findings on lifestyle and aging. It established that retiring and devoting time to playing golf isnt that beneficial. In fact people who continue to work after the age of sixty five live on average four years longer stay up to a later life extends life. Exercise programs are life span. Sports and Physical Activity have positive effects on health and wellbeing in later years. Regular running provides a health boost that lasts well after joggers have put away their running shoes. Research is hard study volunteers train vigorously for several weeks. They were then able. Cellular changes directly triggered by the participants working out. Physical activity had contacted cellular aging. So far tis the contribute to
topics Determining peoples biological age; Factors that boost Life Expectancy; Collective intelligence; Flying scarecrows; Why is the sea salty . Makes you feel free. Servers dimitri wrote to us from the Greek Capital Athens to say partying is how people there stay young with lots of traditional dancing. And david Earnings Recipe for youth is to make music. Maybe hes on to something mick jagger is after all seventy five years old. We humans spend a lot of time probably our entire lives learning new things one way or another in schools if we have the opportunity but also in everyday life knowledge socials. Kills strategies to negotiate the world. Different species develop their own clever methods for survival. We visited now where bunch of small fish show what
swarm develop capabilities that individual fish dont have. That something thats puzzled researches for a long time. They watched the Swimming Fish over and over again. But they found the decisive clue in an old russian book there was some Great Britain work in the fiftys and sixtys in russia is a guy called Dmitri Ruddock of who was the first person to actually realize that the interactions among these individuals could produce Emergent Properties and he tracked the motion of fifths by projecting sunni film on a wall and tracking with each individual goes with a pencil and he speculated that in future this is going to become increasingly important. On the stand how and why this form schools. In carson and his colleagues took on the idea and refined it with the help of
modern technology. Theyve created bar codes to attach to the fishes dorsal fin. Each fish gets one of these individual marcus so they can be clearly identified at any time. When theyre released into the big pool. As expected the fish moved from shadow to shadow. Of the Camera Footage of the Swarms Movement is then analyzed using software that can show the path of each individual fish. Straight away the scientists notice at the fish swim more slowly when they reach a dark area. The young cousins studies how the changes in speed affect the swarms overall behavior. Track the motion we can look at the accelerations that the individuals exert influence the social influence that exists between these different individuals and we can visualize these as connections almost like springs or realistic connections between the individuals and this allows us to understand then how the collective how this network of communication helps the the group solve problems what would. Find is that the social interactions almost like a spring an invisible spring between the individuals and so if two individuals are moving together and one dog treats and slows down the other remains going fast the
together lots of species seem to demonstrate collective intelligence. One thing salt water fish dont need to learn is how to deal with all the salt in the water they live in whenever they drink lots of salt enters their blood luckily they have specialised cells in their gills that transport it back into the water. Which brings us to an interesting question that our viewer francisco not for in mexico has posed. Why is the ocean so salty is someone constantly pouring salt into it just the opposite so farmers harvest the minerals from the sea so we can later sprinkle it on our food. The ocean so begins its journey when it rains in the mountains for example. As the. Water flows through soil and over rocks it picks up Sodium Chloride a mineral formed when the metal sodium reacts with chlorine gas. You dont detect
the sultan fresh water lakes and rivers because the concentration there is too low. But as rivers transport the water into the oceans the salt accumulates over time along with more released from benson the ocean bottom. As a result one leader of sea water contains about three tablespoons of salt on average. Thats one good reason why you really dont want to drink ocean water. But why Doesnt The Sea continue to get salty or thats probably because some of the dissolved salt is constantly being removed from seawater to form new minerals deep down on the seabed. When sea water seeps into the shore along the coast it also leaves salt deposits there. The water evaporates into the atmosphere only to fall again as rain. In rivers
washing more salt into the sea. Development is red white i mean i dont mean. Do you have a Science Question that youve always wanted oncet we happy to help out send it to us as a video text over a smell if we answer it on the show well send you a little surprise as a thank you cannot just honest. Youll find us at d w Dot Com Slash Science Drop us a line at d. F. W. Undisclosed site tech on facebook d w dot science. The sky pretty crowded with countless birds flying around and lots of plane sitting all over the place. In fact. There are about Two Hundred Thousand flights every day we see them pull speeded up. Planes and beds do not
mix its extremely important to keep birds away from escorts but thats not easy. The Dutch Company called kid Flight Solutions has come up with an interesting answer to the problem. It looks like a bird of prey but this is very bad and it hasnt quite mastered landing yet. And this Clumsy Machine is supposed to frighten off real boats everyone knows that birds are dangerous for airplanes but birds are also annoying for farmers because they eat their crops and birds in history are not really good match because first oil and gas side it is not wanted the birds can nest there so theres a lot of various sides where birds are. On wanted so you want to keep them out of the area and thats where we can help. Come back at port windy weather isnt the only factor hampering a smooth landing. Keeps
a close eye on flying objects on the runway. A number of pose a safety risk but once youre in hamburg they include seagulls and crows. And were seeing increasing numbers of grey herons dogs oh i also great peace. And so guns ingrid is a real falcon truly fair in Juicing Falcon i have but boca takes her to the airport to scare off other birds hes heard of The Robot Falcon but he thinks his Flesh And Blood but can do the job much better. In the eyes of the cream of the cross can tell very quickly if a butt of praise of the moon. So if its really a danger or not they know instinct. Now and then you see the whole flying around here on its way somewhere on the crows dont react the bird of prey needs to be
actively hunting. Two feet. In contrast to the real falcon the robot can be controlled and thats an advantage. To you to move looks for the nearest prey so you cant make it go off to a specific but as soon as its flown off you cant control it. Once its taken off a real falcon pulte whatever takes its fancy. A robotic one is a lot more User Friendly so long as other bad to convinced by it. A real bird of prey its dangerous to them sort it will try to stay away from it and since they dont see the difference between the row birds and a real bird of prey they will also be afraid of the robber. In designing their government you control the crate with the realistic appearance and white of its living counterpart Robots Developers have succeeded where many others have failed lighting is straight forward because it doesnt require the wings to me at craft
engineering uses the same principle. Other movements are much harder to emulate but its propel themselves forward by pushing at backwards with the wing tip following an elliptical path. When the bird flaps its wings its angles them slightly and opens it sound to fact that this minimizes the average distance as the wings meet up. When the bird flaps its wings down it spreads them and the feathers i fill up efficiently pushing arrow away. Trucking provides both forward my shin on each leg. The very bad doesnt have any feathers but its movement. I mean late the use of real bad what kind of make to suggest and whether positioned is the engine is closely guarded secret. Bird fly basically is based on two different
motions so its like a rowing boat so what you have issue dont only have the motion that a lot of people think the birds do like the Up And Down Movement but you also have the movement thats like a rowing boat so a little bit like this and so what we really want is that the wing. Can make a flexible motion so it should be able to really move like this so those motions are really needed for flapping wings light. The engine is soon found out that attempting to copy nature brings its own challenges for an airplane for example with this very easy to make a small scale model and the put it in the wind tunnel and then to calculate everything that this related to the aerodynamics before bird this is difficult because you cannot put a real bird in the winter no you cannot do these measurements so you really have to learn from how to do this in nature. They also copy the shape of the body from
nature thats how the buts recognize members of their own species so they can distinguish between friend and foe so the word is really important. And with that it is very important that it flies by flapping its wings so if it doesnt flap its wings. Other birds know that it is not actively hogs but if the bird of prey starts flapping its wings then it starts to spend energy and it wants something your return so would really wants to get Something Back for the effort that is making so thats when it starts hunting so they know to the moment that the bird of prey starts moving its wings that they need to get out of. The groove just already deployed on runways in england and come into but in germany its cost is adrenaline and trends abound in apples. Next time on tomorrow and today were going policy for many people posses mean alcohol but how does our social behavior change under the influence that is
a serious academic question study shows we get smiley and others look fringing of course to get the wrong impression were not saying go out and get wasted on down science want to hear more they chew need next week buy from now. Good. Or more. Youre sure g. V. Mordor g. W. Bush more of. What you want when you bought it up today extraordinary. Into applet decide what song no more. Come smart t. V. Every journey begins with the first step and every language the first word looks a little coaxing germany to lunch or. Why not learn listening. To stuff its simple online on your mobile and free. Using learning course. German made easy. We make up oh but we watch as folks
that Fund Education we ought to sever the surface of. Them want to shape the continents future. Be part of it and join african youngsters of testing share their stories their dreams and their challenges. The Seventy Seven percent. Platform for africa charting. His Creations Interests brand a mistake of colorado that. Look what do we really know about the man behind the torch. What motivates him how does he think and feel good moments in the life of a great fashion designer. Tough as it starts september not to double