convert your M-30 to cycle and walk

He Boulevard Periphérique It is a sort of Parisian M-30. The French city has, like Madrid, a ring road with a length of 35 kilometers. It was designed in 1958 to unclog traffic in the city center with a clear objective: it was faster to go around the city center at a sustained speed than to pass through the center of it. Both projects have grown with parallel lives. The Parisian highway was not completed until well into the 1970s and Madrid began construction of its own in that same decade. But, over time, they have experienced the same problems. Quickly, the highway was absorbed by the city itselfcreating a kind of urban highway. This has caused a series of issues. The first is pollution, both from vehicle emissions and the noise generated. But also social problems with architectural walls that make pedestrian or bicycle passage difficult and that break the internal cohesion of the city. Madrid has solved part of this problem with Madrid Ríoburying a part of it and, now, covering the Sales step. In Paris they have encountered a similar situation. The Boulevard Périphéric was built on the remains of the old Thiers wall, a defensive fortification completed in 1844 that at the beginning of the 20th century was totally useless and made it difficult for those who lived outside the wall to enter the city. What they didn’t imagine is that They were about to create a new wall. The city has been debating for years what to do with this bypass. Measures have already been taken to try to reduce traffic. The latest proposal involves converting it into a real boulevard, with its trees, its pedestrian crossings and its bike lanes. A new mayor’s office, an old project During Anne Hidalgo’s mayoralty, the city has taken various measures to reduce traffic in the city center, calm the passage of vehicles and penalize those who reach the heart of Paris by car. Thus, a project has been implemented to multiply the number of bike lanes, reduce the trips that pass through the interior of the city and punish those who arrive with an SUV to the Eiffel Tower itself. Hidalgo has taken over from Emmanuel Grégoire, who has managed to maintain control of the city in the hands of the socialists. And now a new melon opens: What to do with the Parisian M-30? Under Hidalgo’s mandate, the highway had already taken the first steps toward becoming a true boulevard. So, speed has been reduced to 50 km/h but the traffic jam is so serious that most drivers said they couldn’t notice the difference. But the intention of the new Government is to go further. The new mayor has not hidden At no time does he want to go deeper into the path designed by Hidalgo, reducing the volume of vehicles circulating through the city. And, above all, converting the current ring road into an urban boulevard. That is: transform the road into a road limited to 30 km/h, create a bicycle lane that runs along the entire length and leave space for pedestrians. It is a project for which Parisian environmental parties are also betting which, in addition, support the creation of traffic-signalized zebra crossings, instead of raising pedestrian crossings with bridges. This “changes everything because the road is a circular highway, and from the moment it is broken (the traffic lights are installed), it is no longer the same model,” their representatives point out. Reconverting the image of Boulevard Périphéric is an old ambition of the environmentalist and socialist parties since they have been talking for more than a decade about the chaotic traffic that is experienced every day in Paris but also about the social gap that exists between those who live inside and outside it. Already in 2015, Guardian dedicated an article to the problems generated by this urban highway. The intention of the new Government team is to have the project completed before the end of its mandate. That is to say, in the first years of the next decade, Paris has changed the morphology of this space completely. However, since The Figaro They warn that bureaucracy can play against them and that everything would get stuck if the police force issues an unfavorable opinion on the measure. Photo | Romain DC on Wikimedia and Johan Mouchet In Xataka | The cities with the worst rush hour in the world, explained in these graphs

Build the first closed cycle nuclear reactor

Vladimir Putin has announced what he calls the “first nuclear energy system in the world with a closed fuel cycle”, a technology that promises to reuse up to 95% of nuclear fuel. If it materializes by 2030, as stated by the Russian president, Russia would dodge two of the greatest challenges of current nuclear centrals: the Radioactive waste management and the possible exhaustion of uranium reserves. Uranium? What do you want that. In the Moscow Global Atomic Forum, and before the presence of figures such as Rafael Grossi, director of the OIEA, Putin described the Russian reactor of closed cycle as a “truly revolutionary development” that, in his words, “will eliminate the problem of uranium supply.” The centerpiece of the ambitious Poryv project (“advance” in Russian) is a rapid reactor refrigerated by lead called Brest -od-300, which is being Building in Severska city in the Siberian region of Tomsk. In the same complex, called Odek, Russia will also build the modules for the spongery and reprocessing of the irradiated fuel. 95% recoverable. In addition to using molten lead instead of water as refrigerant, the Brest-O-300 reactor is designed to operate with uranium-reputony nitruro as fuel. It is its in situ integration with the sponge and reprocessing modules that will allow closing the nuclear fuel cycle. According to official statements, this system It will allow 95% of the spent fuel to reusea technically consistent figure with the external reprocess processes, where most of the fuel used (uranium and plutonium) ends up being recovered. The remaining 3-5% corresponds to fission products and minor actinids, which remain high radioactivity residues. It is not a new technology. Countries like France and Russia itself Nuclear fuel already reproces at an industrial scale. And Japan intends to join the club with the Rokkash Plant. However, the Russian project is a pioneer in its attempt to create a fully integrated complex where a fast reactor operates in symbiosis with its own fuel manufacturing and recycling facilities in the same place. If Russia meets its deadlines, you could have The first complex of this type in operation. And to support him, he has established an International Research Center in the Uliánovsk region (the MBIR International Research Center in Dimitrovgragra), inviting scientists around the world to collaborate in what Putin has called a “new era in nuclear energy.” But is uranium running out? Putin’s justification for this strong investment is a future with uranium shortage. During his speech, he cited OECD estimates that suggested a possible exhaustion of uranium resources by 2090, or even before: as soon as in the 2060s. However, the “Red Book” of the OEA does not speak of an exhaustion of uranium, but of An increase in demandwhich could produce tensions in the supply between 2080 and 2110 if significant investments are not made before for the opening of new mines. Russia’s plan It is a strategic bet. If you achieve the closed cycle reactor for the 2030s, we could witness a new way of understanding nuclear energy, and a world with limited resources in which Russia has managed to outdo the rest. Image | ROSATOM In Xataka | France was not prepared for such an extreme climate or to run out of uranium: its energy model cross, and Europe feels it

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