Alexander Jereb

Felix celebrates the third Sunday of Advent with his parents.

While talking to his dad, Felix discovers how sewage treatment plants generate energy from wastewater and how bacteria play a key role in this process...

While swimming in the sea, Felix discovers colorful microplastic sprinkles. Talking to his dad, he learns where microplastics come from and why they a...

Many sewage treatment plants will require a fourth step of treatment in the future due to new regulations and findings.