On 2o July I could not stop myself from thinking about Jeff Bezos. He made a short journey to space, organizing his own private trip. There were plenty of headlines. And many different opinions on the subject.
Was the issue that was of concern to me if he was returned from space safe and sound?. Well, not exactly.
My concern was not in how much the space trip cost (or maybe yes), not in thinking if his decision had a coherent basis (or maybe yes) or in the high-impact maedia coverage (or maybe yes). The problem was that I couldn´ t get out of my mind the environmental impact of the trip, from a life cycle perspective.
After the trip, Jeff Bezos said its spaceflight revealed the fragility of Earth.
But was his trip a sustainable initiative for this fragiel Earth?
Jeff Bezos spaceflight. Source: France 24
Sustainable development is a development that meets the needs of the present without compromising the ability of future generations to meet their own needs, shifting its focus towards the economic, social and environmental development.
To be able to say that the environmental part of the sustainability is being considered, it is needed to evaluate the impact and communicate the result through effective and transparent communication indicators, such as the carbon footprint. It estimates the total amount of greenhouse gases emitted during the production, processing and retailing of goods and/or services, considering their life cycle and using the global warming potential as the only indicator.
It seems that we are becoming aware of the importance of improving energy efficiency at home or using the pblic transport, but we continue to maintain many unsustainable practices in our day to day. For instance. I would ask you to think about the energy consumption required by your daily interactions on the internet. Then, multiply this number by 4,200 billion Internet users.
“Houston, we have a problem!”
Knowing which activities are the largest sources of GHG in our everyday lifes, we can change them towards more environmentally friendly actions, and thanks to the information shared by the International Energy Agency (IEA), I would like to tell you three steps to take a digital detox that will minimize your carbon footprint.
Cleaning: delete emails and online files that you no longer need. This action frees up space on the servers. And the social media accounts that you no longer use. The simple fact of existing and occupying space on the internet generates an environmental impact.
Unsubscribe from the newsletters you are not reading: whilst the carbon footprint of an email is not huge, cutting down on the number of unnecesary emails you receive is one important way to reduce the CO2 eq emitted by these emails. And in a matter of emissions, each email counts.
Choose carefully what videos you would like to play, maybe a pocast would be better.
Applying the equity principle to the environment, each person in the world has the right to us the same amount of environmental space, so if we commit ourselves to use efficiently our resources with minimal environmental impacts, the whole society will benefit.
Touché.
Because this implies that the responsability is shared by everyone. That is to say, it is not only from Jeff Bezos.
The technological offer at CARTIF is varied, we are not dedicated to space tourism but we do evaluate the sustainability and calculate environmental footprints.
Therefore waiting for Jeff Bezos call impatiently!!
During the confinement, we have witnessed how nature quickly returned to the cities in our absence. Wild flora took over the corner of our cities, growing in every available crevice and gradually recovering lost space. It became visible that the streets also belong to the vegetation, but as it is thought, the city prevents their development. At what point did nature begin to disappear from urban environment? Is it possible that they live together? And, if we want vegetation to return to cities for good and to be able to enjoy it, what measure can be taken?
The relationship between nature and city has not always been as we know it today. Before the development of the modern city, vegetation was included in many spaces (tree-lined paths, spurs, avenues…) forming part of the urban landscape. Some of these spaces still survive and we can enjoy them. But this coexistence begins to disappear with the development of the current city (mid 20th century). Due to the growing demand for spaces for cars, roads, parking lots, buildings… the city has been deforesting and relegating green spaces and trees to the background, limiting its growth to specific and insolated areas, and in many cases disappearing completely. Taking te city of Valladolid as an example, we can find multiple cases where trees and gardens disappeared during this time. The Plaza Mayor, San Benito, Plaza Zorrilla, San Pablo,,, at present they are hard, waterproof squares without a trace of the vegetatiom that until not so long ago they had.
With this new urbanism, not only were many green spaces lost, but also the social and environmental benefits they provide, reducing the quality and comfort of urban spaces. Green areas are areas for leisure, games, sports and spaces for contact with nature, but they also improve the well-being and comfort of citizens by reducing high temperatures and improving air quality by capturing environmental pollution. Currently, the presence of vegetation in cities is especially important to help cities adapt to climate change and mitigate its effects, since they act as carbon sinks and improve rainwater management, among other benefits.
For this reason, in recent years it has become very important to reserve the current city model and implement new urban development policies aimed at re-naturalizing and recovering the traditions of nature in the city.
Cities are beginning to take measures in this regard and there are already actions that reintroduce new urban green spaces to take advantages of their benefits. Returning to the example of Valladolid, a representative case is that of Plaza España. This, like many other squares, lost its trees for the construction of an underground car park, on which there is currently a market.
Evolution of Plaza España in images
Thanks to old photographs, it can be seen that previously the square was a green area, with two rows of trees, offering a shady and pleasant space. It is with the construction of the underground parking (1995) when the vegetation on the surface disappears. Until now, the square had remained a hard space, with hardly any trace of the vegetation of yesteryear and it was not until last year (2020) when the square was recovered as a green space of the city. These actions are within the URBAN GreenUP project, coordinated by CARTIF (www.urbangreenup.eu), whose objective is the application of Urban Re-naturalization plans, in Valladolid and in two other European cities: Liverpool (United Kingdom) and Izmir (Turkey). In this case, it is a green roof over the canopy, which allows the current market and parking uses to be maintained. Returning the vegetation to the square not only has an aesthetic impact, it also affects the comfort and well-being of the space, also providing other benefits such as better management of rainwater and the creation of a new space to promote urban biodiversity.
The combination of new forms of vegetation together with the traditional ones, has allowed nature to return to this point of the city… from where it should never have left. We hope that many squares will follow this example and recover the lost green spaces!
Mining activity has defined civilization since its inception and in approximately 90% of our daily activities we use chemical and mineral elements extracted from the interior of the earth.
Currently, mining contributes to sustainable processes, such as the European Green Deal, which try to achieve zero greenhouse gas emissions by 2050, ensuring the supply of raw materials, particularly critical or fundamental raw materials. Critical raw materials are those that are economically and strategically important for Europe, but with a high supply risk.
The EU list for 2020 contains thirty critical raw materials, used in electronics, health, steel, aviation, etc., and some of them are increasingly present in renewable energy. An example of this is the addition to this list of lithium, used in batteries for electric and hybrid vehicles, and bauxite, the main source of aluminum, which with steel and copper represents approximately 90% of the total weight of a wind turbine . The permanent magnets in the generators of these same turbines also contain other critical raw materials such as some rare earths, cobalt and boron.
In photovoltaic solar energy, more than 90% of the solar cells installed in the panels are made of silicon, in addition to containing other critical raw materials such as indium, gallium and germanium.
At the same time, the mining activity is implementing sustainable measures as new techniques in restoring the impacts generated and the use of remote sensing to monitor environmental behavior. Another measure is the reprocessing of waste, for example iron, zinc and platinum, turning these into secondary raw materials, moving towards a circular economy that will increase jobs in the EU by 2030.
More and more, electric and hybrid mining machinery is being used with autonomous and geolocation systems, saving costs and fuels, and various projects are being launched where there are wind and solar photovoltaic energy installations for self-consumption in mining operations.
Another mechanism that contributes to the European Green Pact is the Just Transition with the diversification of activities in regions with high dependence on coal, where there are sources of raw materials used in renewable energy.
Finally, in achieving the zero-emission target in the EU, the environmental and social risks posed by strategic agreements to guarantee the supply of critical raw materials with some countries outside the EU will be taken into account.
As a conclusion, the mining sector is important for the decarbonisation of Europe and the use of renewable and clean energy by integrating these into its own mining operations.
In our daily life, we are surrounded by radioactivity, from natural or artificial origin. Most of the radioactivity in the environment results from natural elements. In fact, there are radioactive elements in many foods and drinking water. But… How do these elements reach drinking water?
The radionuclides or radioactive isotopes are naturally present in the rocks of the earth’s crust, being the uranium mines a good example of this phenomenon. The content of these natural radionuclides varies between different rocks and soil types, with granite formations being one of the ones with the highest radionuclide content. When groundwater is in contact with these subsoils, it progressively degrades the rocks, dissolving and dragging radionuclides that can be integrated in his chemical composition in concentrations that exceed the standards required by Council Directive 2013/51/Euratom of 22 October 2013. The radionuclides that may be present in drinking water are mainly radon (222Rn), uranium (238U, 234U) and radium (226Ra), among others.
In Spain, the control of radioactive substances in water for human consumption is established according to Royal Decree 140/2003, which indicates the radioactivity parameters to be measured and the maximum values allowed. This RD quotes “all the data generated from the controls of radioactive substances in drinking water or water for the water production for human consumption must be notified in the National Information System on Drinking Water (SINAC)”.
But, do citizens really have access to information about the radiological quality of drinking water? During the development of one of the transversal activities of the LIFE ALCHEMIA project, it has been concluded that, really, the answer varies greatly depending on the country. This European project, co-financed by the LIFE Programme of the European Union, aims to demonstrate the feasibility of environmentally sustainable systems based on oxidations with manganese dioxide and bed filters to removal/reduce the natural radioactivity in water, and minimize the generation of Naturally Occurring Radioactive Materials (NORM) in the purification stages.
The LIFE ALCHEMIA project is developing databases that show the levels of natural radioactivity in treated water in drinking water treatment plants throughout the European Union, and it has been observed that in countries such as France or Estonia, citizens have free access to this information, while in countries like Finland or Sweden this information is not public or is not easily accessible. Spain is within this second group. In fact, looking at the SINAC (National Information System on Drinking Water), it is verified that the information on the radiological quality of water, is not accessible to the citizen.
Therefore, hundreds of water managers and City Councils have been contacted to request information, but only a few have responded to this request. This situation is more worrying when the high levels of uranium and thorium present in the subsoil of provinces such as Almería (province where LIFE ALCHEMIA is operating three pilot plants), Pontevedra, Ourense, Salamanca, Cáceres or Badajoz are verified.
This lack of transparency may be due to the fact that the concept of radioactivity does not have a good reputation due to the different catastrophes associated with it, so it is thought that radioactivity is indicative of “death”, even though these catastrophes have no relation to natural radioactivity.
As a final reflexion, three questions:
Did I know that water from my tap may contain natural radioactivity?
Do I know the radiological characteristics of water I drink daily?
And if I want to know them, do I know where I have to go and can I really get that data?
If you try to answer these three questions, you can draw your own conclusions about how this environmental problem is addressed in your locality.
More than a year ago, we invited you to think green and it has been almost two years since we presented the concept “re-naturing cities”. Time waits for no man and it is a great achievement for us to ascertain how these concepts, which we study theoretically, become projects.
For both concepts, the implementation is being carried out with the URBAN GreenUP project implementation. Coordinated by CARTIF, its objective is the development, application and replication of renaturing urban plans in a number of European and non-European cities with the aim of contributing to climate change mitigation, improving air quality and water management, as well as increasing the sustainability of our cities through innovative nature-based solutions. The urban renaturing methodology is going to be demonstrated in three front-runner cities, Valladolid (Spain), Liverpool (The UK) and Izmir (Turkey), with the purpose of becoming more liveable cities using nature. To achieve these objectives, the consortium is formed by 25 partners (now, friends) form 9 countries which involve 3 continents (Europe, South America and Asia).
But we should not be bothering ourselves with all these technical definitions, let us try to use our day-to-day language.
Why this project and its development is so important for the citizens of Valladolid?
… Because Santa María Street will no longer be “one of the pedestrian streets perpendicular to Santiago Street” to become the first street in Valladolid with a Nature-Based Solution installed, green covering shelters specifically. These infrastructures integrate specific vegetation in flat surfaces and their structural features allow provide water for plants, humidity for the ambient and shade for citizens. They contribute to the reduction of heat island effect and improve the well-being providing physical coverage for sun and rain and, moreover, they will allow that the green colour appears in a grey zone.
… Because the time before the bus appears in Plaza España will no longer be a moment of impatience (during which we cannot help feeling “when will the bus arrive!”) to become an instant in which we can feel comfortable seeing the green covering shelters installed that will serve as a support for local urban biodiversity.
… Because one of the main avenues of the city, with high traffic density, will incorporate green noise barriers, structures designed to allow passage of wind thus avoiding its fall and it will mobile characteristics. They will include innovative substrate and specific vegetal species in order to avoid the negative effect of traffic noise for our ears (even 15dB of reduction) to please the eye, improving the air we breathe indirectly.
… Because the widely held etymological theory about the name of Valladolid which suggests that it derives from the expression Vallis Tolitum (meaning “valley of waters”), will become “theoretical” more than ever. The city has suffered important floods over the years that honor the possible origin of its name, but the floodable park to be implemented at the entrance of Esgueva River will integrate several NBS to minimize flooding and allow water drainage when heavy rainfalls or extraordinary flooding episodes occur, in that they are becoming increasingly frequent due to climate change.
It will be in a 2-year time horizon when a total of 42 natured-based solutions will be implemented in several areas of the city, and all of them will contribute to transform Valladolid into a more liveable city and resilient to climate change.
For projects such as this, we are organising the “BY&FOR CITIZENS” conference on smart regeneration of cities and regions, with the collaboration of the Institute for Business Competitiveness of La Junta de Castilla y León. It will be held in Valladolid on September 20 and 21 and among the experts attending the conference are included Paul Nolan, the director of The Mersey Forest, and Ramón López, from the Spanish Climate Change Office, to present and moderate several sessions about integrating nature to create new city ecosystems .
As the psychologist Daniel Goleman says “Green is a process, not a status. We need to think of ‘green’ as a verb, not as an adjective”.
One of the main approved actions in this cross-border project is the restoration and optimization of a constructed wetland in Flores de Ávila, a small municipality in Castilla y León. This waste water treatment system allows the flow of purified wastewater back to the river Trabancos, with enough quality as not to modify the native ecosystem.
This activity has the aim of demonstrating that the proposed solution (the constructed wetland in this particular case) effectively improves the efficient integral water management. This demonstrative pilot experience will allow constructed wetlands introduction as a natural strategy for diversifying wastewater treatment technologies and will check its application for emergent contaminants in urban wastewater at the same time that could provide other environmental advantages in the selected sensitive locations.
The new installation will be a submerged surface flow constructed wetland with five different plant species sited in 10 cells separated by a sheet of water. 5 cells will be seeded with Phragamites australis, and the other 5 cells will be in parallel to the first 5 with different plant species for the analysis of the wastewater treatment effectiveness of the two different configurations and the various species.
This purification system will be supplied with caudalimeters for measuring the input and output flow of water and evapotranspiration and, furthermore, a weather station to collect climate data during the pilot working time.
During the project development, physico-chemical and microbiological data will be collected and analyzed. Monitoring of each cell will allow testing the effect of plant biodiversity over microbial communities responsible for wastewater treatment. Finally, metabolic activity and bacterial species effect over priority and emergent contaminants removal will be assessed.
These tasks will permit information gathering about this wastewater treatment usefulness as an integrated solution in a natural ecosystem. The location of the pilot was chosen in order to demonstrate that constructed wetlands could be integrated in ecosystems with extreme weather conditions, especially considering raining patterns. The area near river Trabancos is affected by the seasonality of its flow, due to drought and flood periods in the river channel. This river hosts the endemic species Achondrostoma arcasii (vermillion), and the study of this species evolution will be a key indicator of this wastewater treatment integration in the natural environment.
