There are 700 million unused mobile phones in drawers in the EU. The estimated value of materials in all these phones is €600 million to €1.2 billion. If we collect all these phones, we do not have to mine for…
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Plastic production has sharply increased over the last 70 years. In 1950, the world produced just two million tons. It now produces over 450 million tons. Plastic has added much value to our lives: it’s a cheap, versatile, and sterile…
We often use markers in our daily life, especially at school. But there is one big problem – markers aren’t refillable. After markers run out of ink, they are usually thrown away without thinking twice. For most makers the reservoir,…
Greenhouse gases need to be cut at every turn, but neither at the political and societal level nor in one’s own habits you can change everything at the same time. So where do we start? Perhaps where it will do…
We’ve all heard the phrase: “The next wars will be over water”. Water scarcity is recognized as one of the most important global risks that humanity will face in the coming years (see www.un.org/en/climatechange/science/climate-issues/water). In the island complex of Cyclades…
CO₂, climate crisis – everyone knows by now that we have a problem. To deal with it properly, we also need to understand the math behind it. The greenhouse gases that make our earth warmer stay in the atmosphere for…
“Just our children still read in paper books, my wife and I are always using e-book readers “. I recently heard this statement from a friend (bookworm!). E-book readers have been around for quite some time, but it’s only recently…
Waste production is a global problem. Worldwide, people are looking for solutions for this. Waste is produced in various locations. How much do waste do we produce at home? The Eurpoean Union tries to reduce our waste production. For instance,…
St. Peter is a rapidly growing district in the periphery of a capital city. Nowadays, more than 10,000 people live in the three largest housing settlements and yet the area is inadequately connected to public transport, thus the car density…
