good ventures. one goal. the preservation of our climate. is not is an issue of heart trees and certain paths and more. exotic birds and danger and surat nasrin survival realize that these are radically different way of living it's rather. passion for starch nov 6th on t w. 50 w. news and these are our top stories french police say they have arrested a suspect over the shooting of an orthodox priest in the southern city of leon the victim is said to be in critical condition there is no indication from french officials that the attack was terrorism related. british prime minister boris

johnson has announced angle and will enter a 2nd nationwide lockdown starting next thursday the measures will be in place a for at least 4 weeks johnson said action was needed now to contain a surge in corona virus cases. one of cinema's all time greats is gone james bond star sean connery has died at the age of 90 he shot to stardom in the very 1st bond film at dr no in 1962 and went on to dominate the silver screen for 4 decades the veteran scot one of many awards throughout his long career including an oscar and 3 golden globes. this is g w news from berlin follow us on twitter and instagram at steve w. news or visit our website dot com. org.

this is bullshit so is this. and this. all the who sit in on and above our planet amounts to about 1400000000 cubic kilometers almost all of it more than 97 percent is salty less than 3 percent is freshwater and most of that is in snow and ice in glaciers and in the arctic and antarctic so the amount easily accessible to us humans is relatively tiny. it's in rivers and lakes and under our feet groundwater that usually hidden from view is vitally important. hello and welcome to tomorrow today the science show on t.w. . the vast amounts of water

on our planet answering still but in motion in a perpetual cycle sheet from the sun makes water evaporates and rise into the air as it condenses into forms clouds and eventually precipitation in ca in the form of rain snow or hail and some of that water evaporates again directly some is taken up by plants and flows into rivers lakes and seas seeps into the earth and replenishes the ground water some of that in turn makes its way to the surface. is the upper rhine valley in southwest germany. there are places here where something valuable and increasingly rare bubbles up to the. surface. clear pure ground water. pike feel right at home in it as too many

other species of fish. some are facing extinction the european is a critically endangered species. own fish need clean water and groundwater is a crucial source of that. the places in this region where the water rising from the depths is so pure is not the rhine river itself but naturally occurring ponds fed by springs. here the water temperature is 11 degrees celsius all year. the springs and ponds are important and need to be protected. it looks like they can be found anywhere unexpected holes in the ground even in the middle of flat terrain. and the groundwater that feeds the

springs some of which ends up in the rhine river itself is the result of a complex process. of rain that falls in the fosters mountains to the west and the black forest up plans to the east feed streams. or seeps directly into the ground through soil and wherever the rock is porous permeable or cracked and travelling downwards through sand gravel or other formations it's filtered and purified while also picking up minerals along the way some of them of great value. when the water reaches impermeable rock it flows along the top of that layer and into the valley. if it feeds into the river it mingles with what was. once crowned water in the alps to the south. there's a huge aquifer beneath the upper run valley. in the valley groundwater bubbles up

to the surface in spots where the rock and ground are permeable. that's how such ponds are formed. in the clean groundwater many life forms flourish . kike like the temperature and the oxygen and nutrients levels in the water not too much and not too little. here some male piker chasing after a female after a bit of a song and dance one couple mate. these pristine ponds are under threat. intensive farming means insecticides pesticides chemical fertilizers and slurry can all pollute groundwater. and thus the springs that feed the ponds. the. nitrate from nitrogen fertilizer causes algal blooms which use up all the oxygen in

bodies of water. various chemicals are bad for aquatic animals and plants. they also threaten the supply of water we humans drink. the level of nitrate in groundwater exceeds the permissible level in more than a quarter of germany. groundwater terrorist nitrate and other chemicals down into the valley. contaminated groundwater endangers bio topes it's meant to sustain. 'd where the ground water is clean it feeds bio topes rich in biodiversity. lakes. reed beds. woodlands and also

manmade lakes. such as old gravel pits as they fill up with water life returned. a young great crested green biz looking for food. it finds a fish hiding in vain among the plants. dragonflies and damselflies thrive here too. they all need clean water to reproduce like these common clue dams off eyes. meet a female heads down into the water. acquire male concert accompanies her.

she climbs down the stock of a plant to make a hole in it and deposit her eggs. at this depth the egg should remain safely moist even if the water level drops. then she lets go and rises to the surface. a male helps her out of the water he wants to mate with her. none of this would be happening word not for clean water from underground sources it's a precious resource we need to do our utmost to protect. we also need to protect that water when it's still in the ground. ground course it is in

a way like the ocean depths mysterious little in the dark it's cold too it may not be cozy but all kinds of way it and wonderful creatures live down there . they've adapted to the harsh conditions. they merit close attention they are fascinating and we actually need them as well. since time immemorial tiny creatures have lurked in the depths of our groundwater most are translucent and blind and they're perfectly adapted to their desolate habitat where there's no light almost no food and little oxygen can see you can harness the ground water ecologist he's fascinated by the subterranean animal species which i'm known as stick a foreigner. around water is the deep sea beneath our feet it's never been properly researched but it's teeming with exciting form of the play a key role in purifying the water. and therefore the quality of the water we drink

for millions of years their habitat has barely changed but now groundwater temperatures are rising and that poses a potentially deadly risk to stick a foreigner as hans yoden han has demonstrated in a comprehensive scientific study. and to sports and simulated when they cheer is still intact the ground water is well protected and its temperature remains stable between $8.12 degrees celsius. so temperatures dropped $10.00 degrees. there were searches find snails and worms unfelt of shrimp like the fungus. these creatures that live in the groundwater have evolved over millions of years to suit their environment they perfected the art of . vibing with very little food thanks made to low metabolic and reproductive rates and eggs with an extremely high yo content to ensure the young survive. there are

some 250 types of steak a foreigner in germany including them if august schellenberg it hasn't changed in 30000000 years and nor has its habitat creatures that can survive being groundwater have adapted to a severely limited food supply the water lauser selous aquatic us for example can go for months without food it copes by barely moving and expanding little energy if august or belair eons and muscles feed on bacteria plant and animal residue in the process purifying groundwater of organic matter and germs preventing tiny pores in rock surfaces from clogging up and allowing the ground water to keep flowing. stick a foreigner can only continue to perform these valuable tasks if their habitat remains unchanged but now ground water temperatures are rising especially in urban environments do partly to climate change and partly to the fact that subways

underground car parks and pipe systems heat the ground and therefore the groundwater. in the long run the tiny creatures of the deep won't be able to survive higher temperatures. temperatures such as here in cars who are defense to point one degrees that's high. about 3 degrees too high but in many cities no longer unusual. for. the groundwater habitat is clearly at risk but unfortunately green technology poses an additional threat to stick a foreigner. in recent years as climate change progresses groundwater has increasingly been used for geothermal energy either to heat or cool for air conditioning for example and that of course heats up the ground water this is happening primarily on the outskirts of cities and where industrial zones are being built

a new developments are going out it's suddenly getting warmer in exactly the places where the former is still relatively intact. but perhaps not for much longer then this figure for now would no longer perform their vital role in purifying the water we drink it isn't always that interest you know that microorganisms bacteria will change but there will be greater diversity more species give us the rate of growth will increase and therefore there will be greater challenges to the supply of clean water it will be harder to keep the microbes in check in our sources of water us us interests of our. more to purification in treatment plants will become harder and more expensive there's little awareness of this problem germany has never said to limits on ground water temperatures there are no regulations on protecting subterranean phone or. a lot of attention is paid nowadays to protecting bodies of surface water but not to the infallible water beneath our feet.

enough according to e.u. law and also the german water resources law the groundwater is a body of water just like a broker lake on it's a college must be protected as yet this is not happening it's seen as a resource and nothing else. ground moves it is all most important source of drinking water and that's partly thanks to these tiny creatures subterranean for now that time forgot. they deserve off thanks opera texan. less than one percent of all the water on earth is in the ground so we should be careful what we do with it. in many areas the ground water level is dropping because we pump up so much of it about 70 percent goes to farming and

a lot of the rest to industry. so how much water does it actually take to grow out and make health is. what is virtual water. let's take genes as an example it takes around 8000 liters of water to make one path that's $53.00 bathtubs full how come growing the cotton uses most of the water it's a very thirsty plant if the rains failed cotton fields have to be irrigated. and if the cotton is to be spun into jeans it also needs coloring rinsing and bleaching that pollutes a lot of water. virtual water is the unseen water that goes into the manufacturing of our product. nearly 19000 liters for one kilo of coffee 184 liters for a kilo of tomatoes and about 15000 liters for one kilo of beef. in

a country with adequate natural water resources high consumption isn't a problem unless of course a lot of it gets polluted but in many regions water is scarce or supplies have been depleted by producing certain goods the water level in the aral sea has dropped 18 meters because of irrigation in cotton fields it's turned parts of was back you start into a salty toxic waste land. tomatoes are cultivated in the parched reaches of southern spain using water piped into enormous greenhouses. and in brazil where there's a shortage of drinking water the country's huge coffee plantations are never short of a dry. coffee is a major export for brazil. europeans import beans water guzzling goods and by extension all the virtual water needed to produce them seen from this perspective someone living in germany uses 3900 liters of water

a day slightly over the global average but cooking showering and laundry make up only a small part of that most water used here is virtual water hidden in the products around us. is a finite resource the fresh water is especially bad and it exists in the petrol cycles like the rest of nature in carbon and nitrogen for example the atoms and molecules that make up everything on earth there are agents billions of years ago. the cycle of emergence and decay. and nothing goes to waste at least nature but when we humans get involved it's another matter entirely. millions of tons of building waste and global are produced around the world and.

much of it and landfill. but what if it were possible to transform trash into new. the wall insulation in this house made from plastic bottles tetra packs. and potato. and was just one of its many features. this is a test facility for the temporary residence of students who are spending several months here to find out what shapes up as 100. it feels good to know that you are living in a place that is going to be the future because now cities are turning to to mind and they are living in this environment with these materials and you know that you don't miss anything and it also provides you with fixed i mean to say. one man's

trash is another man's building materials expert enrique marchese calls it i've been mining practically everything in this apartment is recycled over the cycle of . the not the other side of the temple our material resources on earth are limited . and. there's only so much copper building sand and so on that's a fact we're slowly reaching a point where there's not that much left we need a solution and the only one that works is a circular economy and yet you guys love it off and they so for example the rooms are fitted with carpets that a manufacturer can later take back and refurbish into new carpets they cost small was then called if that they picked somebody you don't buy the car big you just rent it because the manufacturer will want it back at some point so you seem to be all you have it seeks most of the materials here can be fed back into the system so that the same product or something different can be created from the old of it into

the piece now is toast. but to maintain this kind of cycle the buildings need to be designed in the right way. to go left you have to be able to just assemble the building into its individual components that means everything can be just connected it's all the either screwed or slotted in as. with all the i like to exaggerate a bit and say it has to be possible for 2 people to take the entire building up argue with just an electric screwdriver for the norm that. this bronze door handle once belonged to a bank that was demolished these kinds of high quality components often go to waste . a swiss online platform now sells building elements from demolish buildings for very low prices. it was found by architects alleviate pain. in the shrine so. we have around $3.00 to $4000.00 demolition permits

a year in switzerland so more than 10 buildings are torn down every workday in their lives. and it's really surprising what gets demolished and then i'll stick by me to see buildings that were completely renovated just 10 years ago marked for demolition. and you ask yourself is that normal not really the way we should be proceeding. the online platform has a diverse clientele some of the items listed on the site and brewery in switzerland . it was a stroke of luck for architects bastian told around. this official style i just searched the platform for window. and i found these ones these are photos of the original building the windows i wouldn't frames. i

bought 25 of them for hardly anything because they would only have been thrown away otherwise. book let's go here because you know what about that i use them for this partition wall in a. rather. still very few components like these get recycled storage is a problem also not everyone in the construction industry is convinced. although there are already countless extraordinary example was about cycling around the world. why is recycling not yet common fakes and construction. these building materials are available and affordable so why don't more people make use of them. it's about taking the plunge in a place we notice that people are just unsure of what because there are a lot of unknown factors like legal and planning aspects in the way he's put on the

blog and as is often the case if something's new then there's uncertainty. uncertainty holds you back and we see that as the biggest reason we don't wish. other countries have made more progress like the nothing and these bricks are made of waste products they're manufactured in this old brick yard south of on stood by him just as the conventional brick seems to be. the main product of the startup. and. the already does a beautiful colors it doesn't necessarily look like waste anymore. the bricks are mainly made from shredded building rubble and industrial waste. another 31. that also tells like a nice story is. so what i'm holding here on my hands used to be toilet vaults

saying. tiles like a kitchen. room tiles. the market for them has grown by life for the past year although these particular products are expensive sales are improving. so this is the shoulder pepper there's just there's a middle one there's you know guys this is the salami. but it's always a combination of this idea of just an ability to combine with the side i think people really like to buy beautiful things and it's it's a win win if it's sustainable and beautiful and india nobody wants a building even if it's sustainable the colorful bricks cannot be seen in many new and renovated buildings across europe. the netherlands is a pioneer in such you know economy the country wants to recycle all of its waste by 25th state and it's aiming for 50 percent by 20 fathi now bishops plan.

i think only one solution to speed up the transition to a circle our economy and that is just. make it policy and policy in terms of tax incentives so that's a nice 1st step but actually starts having penalties as people don't use reuse materials for instance seed to meet the time for change is now it makes sense and people know it is and it won't cost a great deal it'll just take time and our construction industry has grown to what it is over the last 150 years it's the world's biggest economic sector i mean it's not something we can change overnight to eat sensitive data but it does need to change so you know. our resources are running out. the problem is red white i mean i don't mean you think. do you have

a science question if you'd like us to unset. send it in. if we feature it on the show you'll get a little surprise as a thank you. come on just because. you'll find us on the web at d.f.w. dot com slash science or check us out on twitter. that's all for now thank you for joining us. from morning grossing stories about science and technology visit out websites. will be back next week with a fresh edition of tomorrow today. until then. through

turkey at 70 kilometers per hour. and eventually in transportation. the tickets are in high demand. whether romantic dreamers park or influencers they all want one thing to travel across turkey in 24 hours.

on t.w. . much makes a crusade a kind says. let's ask at guantanamo some of. these they're killing. europe's crowned ladies come and go in his brussels fashion house. and we were invited to look into his so intense good. in 60 minutes. it was the 1st international tribunal in history. the nurnberg trials. 75 years ago

a high ranking officers of the nazi regime of mortgages by the allied forces. were the 1st war criminals to be held accountable for their crime spree. measured by the government found them on them going root out 10 years for a sure. our 2 part series the 3rd reich dog starts nov 12th on d w. express travels across turkey in 24 hours from the capital ankara to the armenian border in the east it's spartan and slow but every day thousands of people try to get one of the coveted tickets for the train. these we've got me through the village we tried

to get tickets for a long time but they were always sold out. is that we thought we would never be able to make this trip. to get me.