How fertile is a soil? In the 6th episode of Take Off, the contestants test pH, color, worm population, and consistency to find out which soils are best suited for plants.
Are you a teacher who wants to promote spatial thinking with your students? Then this challenge is for you: Build a 3D object that casts exactly the same shadows as an unknown original.
Migration, climat, Moyen-Orient... sur ces sujets, deux camps s’affrontent souvent, sans consensus ni volonté de compromis. Vivons-nous dans une société fortement polarisé ? Qu'en dit la science ?
