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Director: Jean-Christophe Ribot

Production: ARTE France - DOCSIDE Production - RARE MEDIA, France, 2014

Français, anglais 52mn

London, Shanghai, Paris… Today, historic metropolises are increasingly investing in technology in order to deal with the unstoppable growth of urban population.

From the improvement of energetic networks to the optimization of transportation systems, digital intelligence has been given a central role in city life.

Renowned economists including Jeremy Rifkin (The Third Industrial Revolution) and revolutionary urban designers, such as the New Yorker Adam Greenfield, endeavor to imagine the new urbanity, with more sustainable practices, and the progress promised by the computer management of collective life.

The data collected by all these sensors are like digital fingerprints : if they improve the efficiency and fluency of urban facilities , they also bring about the threatening idea of a controlled society, with cities entirely regulated by a central intelligence.

Are these new technologies auguring more interactions between citizens or, on the contrary, an over-centralized power ?

Director's statement

We are at the dawn of a third industrial revolution. Urban populations are continuing to grow, and every week, one million people around the world move to the city. At this breakneck pace, by 2050, 70% of all human life will be concentrated in cities.

How will we deal with this urban population explosion and the colossal problems it will generate?

This issue has every country on the planet mobilized and raises a raft of big questions on subjects including sustainable growth, digital intelligence, facilities, transportation and energy.

Cities of Tomorrow will reveal this exciting and fast-moving race against the clock to ready ourselves for this new urban reality.

It will explore a range of extravagant, utopian and fantastic futuristic projects in a wide range of areas to illustrate concrete prototypes offering actual solutions that are applicable now.

The series will take the viewer on a trip around the globe to discover the most innovative, emblematic and fascinating of these urban experiments, through three episodes: New Cities, Smart Cities and Urban Farms.

Jean-Christophe Ribot

Why we selected this film

How to manage a growing urban population and limited means and resources?

This film addresses an impressive amount of themes linked to new technologies applicable to cities: connected infrastructures, new economic models, electronic management of the fluxes, energy internet, sharing goods and services, local production networks… among others.

Full of information, it brings in a specialist of these matters: Jeremy Hopkins who reveals to us his passionate and compelling vision of the cities of tomorrow.

Fascinating, thanks to the perspectives it brings, this film projects us right away into the future


Buy green energy

Depending on your region, you may have the option to purchase green energy. 
This can be an important choice for the environment, as standard fossil fuel generated energy emits large amounts of greenhouse gases. 
Nuclear power, on the other hand, creates highly toxic waste. 
Wind turbines and photovoltaic panels, on the other hand, involve significantly less CO2 emissions. Photovoltaic panels, for example, can pay off their CO2 costs in green electricity generated in just three years.

(Fr) Sources et liens utiles

Sorry, this entry is only available in French.


We generate about 300 million tons of plastics a year and we estimate that 8 to 12 million tons end up in our oceans – the equivalent of a garbage truck every minute…

So let’s remember to recycle, refuse products with too much packaging and the ones with microbeads or even pick up trash on the beach.



Consuming less dairy, eggs and meat

Greenpeace recommends a maximum of 12kg of meat issued from eco-friendly breeding farms per year and per person (so, about 230g a week) and 26kg of milk per year and per person (or 1/2L per week).

It’s up to each to switch to a vegan or a vegetarian diet of course, which allows to contribute even more to the collective effort to reduce the consumption of animal products.

Fast fashion

We now have “throwaway fashion”: we buy and throw away garments faster than the planet can absorb.

Within the framework of its “Detox” campaign aiming at fighting the use of toxic chemicals in the textile industry, Greenpeace has published several studies, which denounce the impact of this field on the environment: considerable consumption of energy and drinking water, pesticides to grow cotton, river and farmland pollution, greenhouse gases emissions and some of the world’s most remote areas contamination.


Let’s not forget inhumane work conditions imposed upon textile industry workers, especially in the developing countries.

So, we have to revise our way to “consume” clothes, buy less but of better quality, recycle, trade…



Reduce our electronics waste

Our smartphones, from the moment they are made to when they end up in a mountain of other discarded electronics are a true burden on the environment.

You have no idea how many dangerous chemicals come into the making of your smartphone. For instance, such carcinogenic substances as benzene and n-hexane as well as other just as dangerous substances so, instead of buying the latest model of smartphone that just came on the market, let’s try to keep our smartphones and other appliances longer, or have them fixed.


On a picnic

When going on a picnic, bring along airtight containers for food, flasks and everyday hardware cutlery.

That way there is less rubbish left over at the end of the picnic, which of course will be thrown in the nearest bin, or even better taken home for separating and disposal.

Eat seasonal products

When buying seasonal fruits and vegetables that were not greenhouse-raised, you help in diminishing the energy used in growing them, therefore you’re helping to lessen the impact of farming on the climate.


Download the Greenpeace seasonal fruit, vegetable and cereal calendar:


Limit your exposure to formaldehyde

Wood furniture kits, chipboard wood and some glues may contain formaldehyde, a toxic chemical that should be avoided at all costs.
Make sure you know what kind of materials a product contains before purchasing and whether its best to ventilate the room for a few days after installation.

Buy green energy

Depending on your region, you may have the option to purchase green energy.
This can be an important choice for the environment, as standard fossil fuel generated energy emits large amounts of greenhouse gases.
Nuclear power, on the other hand, creates highly toxic waste.
Wind turbines and photovoltaic panels, on the other hand, involve significantly less CO2 emissions. Photovoltaic panels, for example, can pay off their CO2 costs in green electricity generated in just three years.

Heat loss

Insulating your home stabilizes your indoor temperature and protects you from outdoor temperature changes. It also reduces the need for heating and thereby reduces your enegy costs.
Investing in the energy efficiency of your home can help you reduce your energy costs by as much as 40%.
In adjoining buildings, heat generally escapes through the roof first, then through windows, walls and floors. Make insultaing your roof a priority.

Limit your purchase of electronics

If you're really serious about reducing your CO2 footprint, this is the way to do it. Electronics make up 62% of the greenhouse gas emissions that result from our purchasing habits.
Why is this?
To manufacture just one 2 g computer chip, you need 1,7 kg of fossil fuel, 1 m3 of nitrogen, 72 g of chemicals, and 32 litres of water. For a 750 kg car, you need 1,5 tonnes of fossil fuel—two times the weight of the final product.
For aluminum cans, it's about 4-5 times the weight; it's 6000 times the weight of the 2 g computer chip.

Carpooling: It's better together

If you travel to the same place most days, you're likely to find someone else traveling a similar route. Riding with others reduces the number of cars on the road and allows you to share costs: that's carpooling.
Some businesses post announcements for those seeking a carpool. Maybe could you ask your employer to initiate this service in your company ?
Certain websites allow you to search for a carpool or offer your own ride to others and increase the efficiency of your vehicle.

Choose the train for long distances

An airplane requires six times as much energy as a train for the same distance. A roundtrip flight from Paris to Zurich, for example, emits 300 kg of CO2 per person, compared with only 48 kg of CO2 per person for the same round trip via train.
About 40% of flights travel less than 800 km, which means a distance that would be more efficiently covered by high speed train. The train is also more likely to land you in the center of a city.

Walk more

In the city, many people use cars to travel just 3km or less. These short trips have a big impact, as the 1st km can use 80% more fuel than the average km traveled – for the 2nd km, it's 50% more.
Using a car for short distances is expensive and polluting. Choose a nonmotorized alternative.

Diminishing traditional resources

Traditional energy sources (oil, gas, uranium, carbon) are running out.
These sources aren't renewable, and their reserves are diminishing faster and faster: global consumption has increased by 75% in the past 30 years and doesn't show signs of slowing.
If we don't change our habits, we will surpass our planet's capacity for supplying traditional energy sources in the near future.

Use renewable sources

Once your home is well-insulated and well-equipped, you can go even further by using renewable energy sources – at no cost!
Solar power can heat up to 60% of your daily hot water use or provide 40% of your daily electricity use. You can also capture heat from the soil by using a heat pump.

When you buy imports, choose fair trade

When you can't procure an item locally, choose an import with fair trade origins.

The fair trade label is most often applied to products that you can't produce locally (bananas, chocolate, coffee) and are usually transported by boat, which is less polluting than air travel. The best way to protect the environment, however, is to stick to seasonal, locally produced items.

Ride a bike

Bicycles are economic, quiet, safer for the people around you, faster in the city, and don't pollute or require fossil fuels—plus they're good for your health.

Be wary of promotions

Watch out for "clearance” promotions on fresh foods that might entice you to buy too much . . . and end up throwing most of it away. Certain foods, of course, will last a while in the fridge, but that means you’ll be paying for their keep in energy expenditures. Unless you’re getting something that really will last (jams, preserves), it’s always better to eat fresh foods quickly.

Give your time

• Volunteer with solidarity associations, fair trade activities, or other charitable arenas
• Spread the word on info, news and petitions related to local and international solidarity and how everyone can make a different in their everyday lives
• Work with your school: take charge and build awareness in your school community. You could help your institution become a model for sustainability.
• Take action at work: encourage your employer to choose ecological products from fair trade sources to sell/use/manufacture.
• Make a Facebook group calling on your favorite brand to transition to 100% fair trade
• Write to your preferred brands by posting on their Facebook wall
• Ask your local grocers and storekeepers to offer more fair trade products

Share a vehicule

If you don't need a car everyday, why not share one with a family member, friend or neighbour?
Car sharing can be easy, practical, friendly, and effective.

Adjust settings according to your needs

You can see serious energy savings by adapting your appliances according to your needs.
For example, a hallway doesn't need as strong of lighting as an office or reading room.
Place your living room lighting strategically according to where you are most often seated and in need of light. You can also reduce your energy needs by taking advantage of natural light sources.

Support public transportation

Public transportation can get you anywhere in the city, and has been growing in popularity. Its often faster than a car, less polluting, and avoids the stress of traffic and parking. It also allows you to use your travel time for other occupations, like reading a book or having a conversation.

12 tips for reducing your daily energy consumption

1. Keep your thermostat around 19 or 20C
2. Lower the thermostat to 16C at night or during extended absense
3. Keep your thermostat properly adjusted
4. Turn off the heat during summer or extended absense
5. Defrost your refridgerator and freezer regularly
6. Do your laundry at low temperatures
7. Choose "eco" cycles for washing machines and dishwashers
8. Avoid using a clothes dryer unnecessarily
9. Turn off electronics that aren't in use – avoid standby mode
10. Take a shorter shower
11. Cover the cookware
12. Clean the light fixtures

Buy second-hand

There's nothing like buying second-hand for ensuring the long life of a product.
Many websites allow you to search a plethora of used products that are often still in great shape.

Ban all chemical fertilizers

Many chemical fertilizers contain heavy metals, such as lead, mercury or cadmium. When transmitted through the soil to vegetables, they contaminate the entire food chain. Avoid them at all costs!
Pesticides and insecticides contaminate soil and groundwater via rain runoff.
Their production also consumes large amounts of energy. As these products are dangerous even for the farmers that use them (who risk accidental inhalation or ingestion), their packaging becomes dangerous waste that requires costly and complicated disposal.
There are many natural alternatives.

Favor “Eco-friendly” FSC label wood furniture

The FSC certification is today the most reliable label to guarantee the wood you buy comes from a sustainable management forest. Technically, the label should be seen directly on the wood, it guarantees the chain of transformation has been correctly controlled, from the forest to the finished product, everywhere in the world.

The use of local products will diminish transport, which is a huge energy hog and protect local jobs.

Give your time

• join an animal protection association
• sign internet petitions
• participate in tree planting and reforestation activities with environmental associations

Watch out for palm oil

Palm oil is found as an ingredient in about one out of ten food products sold in Europe (cookies, chocolate, candy, ice cream, sauce, margarine, etc.) It takes 17 m2 of palm plantation to satisfy the annual demand of one French person.
But this crop is responsible for 90% of the deforestation occurring in Malaysia. In Borneo, it has caused the destruction of 1/3 of native forests in 20 years, resulting in significant losses of unique species of both plant and animal. One of these is the orangutan, the "men of the forest", who suffer from loss of forest.
From thousands of miles away, our food purchases are determining the fate of this great ape.
Palm crops are also treated with 25 unregulated pesticides, adding further damage to precious habitats.

Water foot print

We also talk of virtual water. This is calculated by taking into account the volumes of water withdrawn or polluted to produce a product (but not its transportation to where it is consumed).
It takes :
- 1,000 liters of water to produce a liter of milk (water consumed by the cow, animal feed and washing);
- 3,920 liters to produce a kilogram of chicken (30 liters to drink and 6,630 liters to grow its feed (cereals and oils);
- 100 liters to produce a kilogram of cotton (mostly for irrigation);
- 15,155 liters of water to produce a kilogram of beef (120 liters to drink, 35 liters for washing and 15,000 liters to produce the feed the animal consumes.

Don't use disposable products

Always choose washable dishes and silverware. Kick your plastic dishware habit. If you don't have enough plates for a large gathering, borrow a few (they are generally washed up for the same price).

Choose eco-friendly foods

(for example products carrying the “organic” label). The more organic farming gains in popularity and volume, the less greenhouse gases we’ll emit. For instance, pesticides, nitrogen based fertilizers and GMOs can’t be used.

To learn more: greenpeace.fr/agriculture-ecologique/

Eat local

Consuming locally produced food reduces the number of intermediaries, shortens highly polluting transportation and contributes greatly to reinforce the economic vitality of our regions.


To learn more: bioetlocalcestlideal.org

Have the Amap (Associations to maintain family farming) reflex

These associations maintain a direct link between farmers and consumers.

By subscribing to Amap, the buyer chooses the frequency and quantity of fruits and vegetables they need/wish, then comes to pick them up on a regular basis at one of the network’s POPs.

To find an Amap close to you: www.reseau-amap.org

Consume less dairy, eggs and meat

Greenpeace recommends a maximum of 12kg of meat issued from eco-friendly breeding farms per year and per person (so, about 230g a week) and 26kg of milk per year and per person (or 1/2L per week). It’s up to each to switch to a vegan or a vegetarian diet of course, which allows to contribute even more to the collective effort to reduce the consumption of animal products.

Avoid excessive packaging

Too many food products are over-packaged in several layers of material that is often disproportionate to the volume of its contents.
Unpacking three shopping bags generate about one shopping bag full of packaging waste . . . all of which will go straight into the rubbish bin.
You also pay for this packaging: in the case of food products, packaging can account for as much as 20% of the item cost!
We also recommend avoiding single-serving products (cookies, yogurt, drinks, etc.)

Think pulses and dried fruits

They bring you good fats, unlike the meat products’ saturated fats and make you feel full faster.


Eat your leftovers

Do you find vegetable which have lost their freshness to be unappetizing? We don't blame you, but that doesn't mean they can't be eaten! Toss them into a soup for added flavor and texture! Try to use all the veggies hiding in the bottom of your fridge for your soup, certain vegetable leavings, and some old cheese. You'll end up with a delectable soup!

Choose your fish carefully

Today, 90% of commercial marine species are overfished or fished at their sustainable limits… Greenpeace isn’t anti-fishing, but for a type of fishing that affects  the least our planet, fishermen and the balance of our oceans.

That is why it is so important that you choose the fish you buy depending on the species (don’t buy threatened species, be aware of reproduction cycles) but also the fishing techniques (forego the fish caught in a destructive manner).


Check out all our detailed recommendations: greenpeace.fr/poissons-consommer-nuire-a-planete/


Manon · Sunday September 3rd, 2017 at 11:14 AM

Très intéressant et très bien expliqué. Bravo pour ce film !

karomana · Saturday September 2nd, 2017 at 10:22 PM

Bonjour, mon commentaire ne concerne pas directement ce documentaire mais le thème “énergie” de la semaine. Je trouve cela un peu confus de mélanger dans la même catégorie des docu traitant du nucléaire avec 2 autres docu, que j’aurais plutôt vu dans une catégorie “déplacements urbains”. Je sais que l’on peut voter pour plusieurs films mais le thème de cette semaine m’a paru un peu “fourre-tout”. Ceci dit, tous les docu sont intéressants (et ceux depuis le début du festival) 🙂

Myriam · Saturday September 2nd, 2017 at 06:01 PM

Plutôt que de mettre des nouveaux passages piétons, si on régulait les horaires de travail.. Mais là c’ est plus chaud

LS · Saturday September 2nd, 2017 at 12:04 PM

Aie! Compteur Linky = La pollution des ondes. Aie! Monde de consommation d’énergie sans limite. Aie! Connection permanente et surveillance généralisée. Aie! Poursuite de la concentration des populations dans des mégapole inhumaines. Aie ! Dépendance à la technologie et éloignement de la nature. Un autre monde devrait être possible au service de l’humain. Je ne vote pas pour ce film.

    HL · Friday October 6th, 2017 at 03:20 PM

    Tout à fait d’accord, cela ne change en rien notre mode de consommation.
    Je voudrais même voter négatif.
    Il y a d’autre moyen pour économiser l’énergie.
    Construire une ville à partir de rien demande beaucoup d’énergie dans tous les processus. Et je pense aussi que ce n’est pas notre environnement qu’on doit changer pour y vivre mais nos propres habitudes…

Eboiro · Friday September 1st, 2017 at 12:18 PM

Des expériences intéressantes sont relatées (energie, mobilité surtout), mais ca manque de plan au début, la parenthèse energie est un peu longue et fait oublier la ville (plus adaptée aux banlieues qu’à la ville, problèmatique générale); divers thèmes importants sont oubliés (eau, relations sociales/mixité d’activités et populations, pollution, sécurité,…), des solutions qui optimisent l’existant en reportant le problème sans changer le paradigme (a quoi bon d’augmenter de 20 le flux piéton d’un croisement si c’est entretenir une attractivité trop centralisée). Bien mais sans plus.

maviel · Thursday August 31st, 2017 at 09:06 PM

suis en accord avec ce que dit “EMO”

Bennis · Wednesday August 30th, 2017 at 06:46 PM

Globalement, c’est un bon film qui relate des expériences d’optimisation de la gestion de l’énergie et de la mobilité dans les grandes agglomérations. Il nous prépare à un changement incontournable du mode de vie dans l’avenir. Tout changement comporte des risques et des sacrifices, il faut avoir le courage de les admettre ; on n’a pas le choix.

EMO · Wednesday August 30th, 2017 at 10:35 AM

Le partage énergétique est intéressant, mais la vision big brother de la surveillance des individus (type Shangaï) me fait froid dans le dos.

Eva KRAUTHEIM · Tuesday August 29th, 2017 at 07:08 PM

le schéma proposé ne tient pas compte de la transition écologique et de l’importante baisse des besoins énergétiques qui en découlent (maisons passives, économies locales donc moins de déplacements, diminution du productivisme et sortie de la société de consommation). Par ailleurs, la surveillance vidéo omniprésente n’a pas de sens dans une société de partage et plus humaine. (commentaire pénible) j’ai cliqué par erreur sur un vote pour ce film

m · Monday August 28th, 2017 at 09:19 PM

ON ne parle jamais des data centers de plus en plus encombrants et consommateurs d’énergie, une énergie procédant des ressources fossiles, sauf pour ceux qui s’installent dans le nord de l’Europe pour bénéficier de l’énergie hydroélectrique et du froid climat de la Suède ou de la Finlande. Mais quid des distorsions de plus en plus grandes entre la vie en Afrique et dans le reste du monde

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