Aqueducts

Egg at Altitude

To cook an egg at altitude, does it have to be boiled longer than at sea level? This episode in Italian: https://quesiti-invisibili.podigee.io/8-uovo-in-quota [https://quesiti-invisibili.podigee.io/8-uovo-in-quota] This episode in Swiss German: https://questions-invisibles.podigee.io/8-ei-i-de-berge [https://questions-invisibles.podigee.io/8-ei-i-de-berge]

Standards

The world is full of standards. Why do we have the ones that we have, and do we deserve them? This episode in Italian: https://quesiti-invisibili.podigee.io/7-standard [https://quesiti-invisibili.podigee.io/7-standard] This episode in Swiss German: https://questions-invisibles.podigee.io/7-standards [https://questions-invisibles.podigee.io/7-standards]

Aqueducts

The ancient Romans constructed aqueducts to overcome valleys. Why didn’t they just use pipes instead? This episode in Italian: https://quesiti-invisibili.podigee.io/6-acquedotti [https://quesiti-invisibili.podigee.io/6-acquedotti] This episode in Swiss German: https://questions-invisibles.podigee.io/6-aquadukt [https://questions-invisibles.podigee.io/6-aquadukt]

Power Lines

The electrical grid is made up of masts of different shapes that carry a variable number of power lines. What is the logic behind this variety? This episode in Italian: https://quesiti-invisibili.podigee.io/5-tralicci [https://quesiti-invisibili.podigee.io/5-tralicci] This episode in Swiss German: https://questions-invisibles.podigee.io/5-strommaschte [https://questions-invisibles.podigee.io/5-strommaschte]

Mountains & Hills

Mountains are generally considered terrain elevations. But what distinguishes a mountain from a hill? And if an elevation is very close to the one next to it, when do they still belong to the same mountain, and when do they become mountains in their own right? This episode in Italian: https://quesiti-invisibili.podigee.io/4-montagne-colline [https://quesiti-invisibili.podigee.io/4-montagne-colline] This episode in Swiss German: https://questions-invisibles.podigee.io/4-hugel-berg [https://questions-invisibles.podigee.io/4-hugel-berg]