A modern smartphone contains a large number of elements (highlighted in color). Titanium, for example, is used in the manufacture of the SIM card (light blue), and cobalt in the manufacture of the battery (orange). Hydrogen, which is contained in the housing (yellow), was already used in phones of earlier generations (1960 and 1990). Other elements, such as helium, molybdenum and cadmium, which were used in the past, are no longer present in modern smartphones. (translated by DeepL.com)
=>Full article in German (woz.ch, Le Monde diplomatique, Oct 21): The-eco-sins-of-the-digital-industry.pdf (879.02 kb)
A vital part of life on earth is the continuous hydrologic cycle; Water cycles from the atmosphere to and through the earth and back the atmosphere.
Once water has entered the soil, it will spread out in all directions. The water either gets stored for reusing by plants for example or it drains downward.
Because of soil water air and nutriens can get in the ground which is very imiportant.
Quiz
What happens when water reenters the surface water?
A Infiltration
B Ground water is formed
C Evaporation
Links
EDX
soil water cycle
by Dario & Justin
Heat resources - geothermal heating
In my home, we heat with the heat of the earth, the so-called geothermal heating. It is renewable energy and can be easily extracted. We use this energy to warm our house and also to warm our water.
Geothermal energy refers to the use of heat from the earth's interior. This energy stored in the earth can be used with the help of various methods. In most cases, geothermal probes are used in combination with heat pumps to heat single-family homes and large buildings. Geothermal probes go to depths of 200 to 400 meters.
The heat stored in the earth's crust (thermal energy). It is versatile and can be used for heating and cooling, as well as for electricity generation or in a combined heat and power system. The energy potential is enormous: 99% of the earth is warmer than 1000 °C. And geothermal energy also has many advantages in terms of environmental friendliness: no burning of fossil fuels and thus no harmful emissions.
This Life Cycle Assessment for Li-Ion Batteries (LCA) was made 10 years ago - is it still up-to-date? Is there progress?
More...
General
Resource Mining happened all around the globe and almost every time is a big concern involved, which helps the rich people to stay rich and exploit the poor people that they stay poor.
Resource Mining is more the procedure of how to get the resource out for the earth. Every resource has an individual way to mine them. More...
General
Raw materials are transported by tanker, container ship, freight train or pipeline from the extraction site to the processing and production facilities. Finally, the finished products travel to consumers and, at the end of their useful life, to the place of disposal or recycling. A product and its components travel thousands of kilometers across continents and oceans.
Means of transport
The main means of transport are More...
The Link below is our Presentation about Resources through History:
Resources Through history.pdf (1,29 mb)
Check out our survey:
https://de.surveymonkey.com/r/K7Y7T5C
In our presentation we talk about following topics: More...
Consumption in Switzerland
- Consumption in Switzerland increase every year -> also the waste
- 690 kg of rubbish per person in 2012 -> Nr. 2 waste producers in Europe More...
Embodied energy means all the energy used to manufacture a product. From production to disposal. All this energy is called More...
Cosmetics
Even in ancient times, women and men wore makeup – not just for ceremonies but also in their day-to-day lives. The earliest cosmetics More...