do you know that seventy seven percent topic are younger than six o'clock. that's me and me. and you know what it's time all voices part. of the seventy seven percent speech obama issue. this is where you cut. the seventy seven percent this weekend on d w. the food. have you stream the video today i certainly have and that's not good for the environment but i thought a lot of data in the cloud instead of putting it out so that should reduce my environmental footprint or does it just how green is our digital lifestyle today on ship.

did you know that every google search consumes electricity zero point three watt hours to be precise that's what a sixty watt light bulb consumes in eighteen seconds it may not sound like much but when you consider that google process is three point five billion search requests every day it adds up so should be do without google i can't imagine it to be honest even though it would save energy the internet is too much a part of my life offline alternatives do exist of course like going to an actual store instead of ordering online or using a good old fashioned map instead of us at that. can we make the digital revolution more sustainable we spoke with environmental economist stephan in his book smart green world he tries to answer the question so what really is better for the environment. or streaming anything generally speaking watching a d.v.d. consumes less electricity because transmitting data from the cloud of energy but if

you drive to the video that increases the environmental burden. of them and can make you drive more than twenty kilometers streaming it's better to be less than that d.v.d.'s better if you walk to pick it up a d.v.d. is always better than a campaign that's for the cameras. the rule of thumb here is that it's best to print paper. only talking about files and documents the cloud is greener paperless office is the way to go one of the free markets. purchasing things if you market is more environmentally friendly online shopping. and then transportation packaging to both of which result in significant c o two emissions. of all the things you can do. is since it's a secondhand online market. better than buying new on amazon it's a cult paper book. here it depends on your own habit the more books you read.

in a printed version the greater the environmental benefits. the tipping point comes between thirty and fifty books that's when a new reader becomes greener than paper. shopping mall or online shopping a brick and mortar store is still more environmentally friendly delivering individual purchases to your doorstep isn't energy efficient. working at full capacity online shopping could be more environmentally friendly ironically though when you shop online you're barraged with advertising which makes you consume even more. she's very easy to do streaming storing files in a shopping online it will takes just a few clicks but the fact is even an energy efficient process if you repeat it often enough ends up being precinct energy consumption so if you still isn't

automatically green. digitalisation isn't going to increase the stain ability automatically. we need to transform society and the economy to make it sustainable and then see what positive role digitalisation complaining that. digitalization doesn't always make things more environmentally friendly so it's worth thinking about which solutions are more beneficial take sharing that form for example the sharing economy is booming nowadays we can share cars bicycle apartments your name it and that called all of your for instance lets you share food that would otherwise be thrown away anyone can use it private individuals markets and restaurants a clever use of mobile technology. what are you with thoughts on this stephanie long it. is so incredible the sharing economy is a great idea. digitalisation has been good for some things food sharing couchsurfing. but it's important to realize that there are also some negative

examples if you just would get so foggy to scott showing there have been several studies on car sharing and they've concluded that people tend to use car sharing instead of walking or taking the subway. so when reality it's like a substitute for buying a car out of the gulf so caution erring may actually put more cars on the street and it doesn't seem to affect the number of new cars purchased and what about our buying habits when it comes to smartphones i'm already on my tenth which does make me feel a little ashamed. and i'm just one of many people who always want the latest and best in these seven billion smartphones were manufactured between two thousand and seven and two thousand and seventeen at a high cost for the environment first the other raw materials smartphones use rare and precious metals from cobalt in the battery to india in the touchscreen they have to be mined and chemically processed all of which is environmentally damaging

. companies invest heavily in advertising to get us to buy the latest devices as a result many smart phones are replaced even though they still work that's also true for computers t.v.'s kitchen appliances that can hardly be considered green. energy consumption the more complex the device the more energy goes into making it and even surfing uses much more energy than you might think. the factories of the digital. vast amounts of data so that users can access it whenever they want with it streaming a film using a search engine. in the cloud transferring the. amounts of energy. if the internet were a country it would be the world's fifth or sixth biggest energy consumer. cryptocurrency mining is especially energy intensive minus ones when bitcoin

computing power to keep the network open running that helps to complicate complex mathematical equations to verify financial transactions. being billed to mind it's estimated that each transaction consumes as much energy as a refrigerator freezer uses in an entire idea. streaming is also an energy hog if you're ready accounts for sixty percent of data traffic and energy consumption that . in germany. as are currently increasing their power consumption by six percent a year for the world wide that figure is ten percent of it's of it unless we generate this energy from renewable resources for all contributing to climate change. and around the world to the number of internet users continues to increase last year it rose by nine percent. what's going to do to save energy the internet of things or io t. for short could help the i.o.c.

is a system that network smart devices a washing machine say well then only run when it gets enough power from your rooftop solar installation will be io t. help or hurt the environment let's take a look. heating and cooling a building takes a lot of energy do light. it's estimated that hans that energy is wasted intelligence i.o.t. systems measure energy use with smart sensors and send the data to the cloud. there it's analyzed to see how energy might be saved. as the internet of things continues to grow it will transmit ever more data and that too consumes energy not all of this data delusion is useful to the cloud or data center intelligent gateways can help get it that data flow to pass on only what's relevant which helps save energy. these smart windows generate electricity

built in solar cells transform light into power which you can even use to charge your smartphone and smart sensors in the windows respond to environmental influences in order to help keep indoor temperatures pleasant while saving energy. so not even experts as sure whether the internet of things will be an environmental boon it will depend on two things how much energy of the devices consume and how much data they transmit another new technology that could benefit. the environment is artificial intelligence could i help save endangered species years and maybe help save our forests at the earth live forum hosted by microsoft bill in some way i expose and vital mental pioneers whether it can boast the same ability and arrive at some fascinating results. in process huge amounts of data in a short time that allows us to tackle projects that would otherwise be impossible.

ai cannot save our planet however i can tell you that without ai will not get there we cannot manage what we don't measure so we need to start by measuring earth's resources so that we can little by little improve how we monitor model and ultimately manage earth resources for example the wild me project identifies and tracks wildlife populations photographs of animals are uploaded onto an open source platform by researchers and private citizens an ai system identifies each animal by its markings and other features and records of the location in time the image was captured that allows scientists to monitor migration patterns for example. and lets users trace the movements of an animal they photographed on their last holiday. the sylvia terra startup wants to use a guide to improve forest management in the united states the software assesses

forests using satellite imagery recording species of the trees their height and the density of the forest this information allows for more efficient forest management biodiversity and helps ensure the water supply. right now scientists that are focused on conservation and are spending thousands of hours just sit seething through images by using artificial intelligence you save the time why did used to take one hundred days you can take only a couple of hours. and the time is now spent backing research instead of sifting through images. most systems that seek to protect the environment are still in development. how effective they'll be remains to be seen. as processing all that data takes a lot of energy. for a project to be worthwhile it will have to be effective enough to offset that energy consumption. here's one thing you can do

use a search engine that pounds trees in directly of course it calls the s.s. they invest eighty percent of their ad revenue and reforestation and conservation project for every forty five searches a tree is planted it calls it as a search engine mask and the results of powered by big now about you could you imagine only going online when you really need to watching a film on d.v.d. rather than streaming it and using your smartphone until it actually gives up the ghost could changing our digital lifestyle help save the planet changes like this just a drop in the bucket compared to what's truly needed tell us what you think on facebook or on d w dot com goodbye and see you soon.

after. all the while becoming a city club in isolation is a mega trends. numbers of people living in cities are soaring and the challenges are growing to how do you plan to make a localist. what the future transportation concepts be like is affordable living

space for everyone unattainable. through the. midst of. a ghost town like no other. thirty years after the nuclear disaster usually deserted but not always. surest sometimes business looking for that ultimate kick adventure come what may. be good to just such a special distinction. holiday in chernobyl in thirty minutes on d w. people here love life. they love their country but not the current conditions.

iran but journey through a land full of contradictions. joy and sadness. confidence and doubt. our documentary depicts the contrasts of everyday life. and help people cope with the for. iran bittersweet. starts may second fanti w's. welcome to global three thousand today we're going to take a look at life in cities urban centers of booming particularly those in asia and africa. all.