The number ? (3,141592 ...), which in Spanish is read "Pi", is the symbol of the quotient between the circumference and its diameter and therefore represents the most perfect geometric body.
The Royal Swedish Academy of Sciences has presented the Prize in Economic Sciences to Abhijit Banerjee, Esther Duflo and Michael Kreme for their fight against poverty.
Danni Büchner is invited to Sam Dylan's Halloween party. But the "Goodbye Germany" emigrant has no desire for many other party guests. And find clear words.