Si ce n’est du sol, d’où un arbre tire-t-il sa masse ?
25:12
The Physics of Flame - What is Fire, Really?
14:11
Inside Africa's Food Forest Mega-Project
8:51
How to Make a Real Diamond - (Not Clickbait)
16:58
The Bridge That Changed the Map of Europe
28:39
“Designed by Clowns!”| How Boeing’s Mistakes Led to the 737 MAX Crashes!
18:35
How Electricity Works - for visual learners
20:46
Finally! A Battery That’s Better Than Energizer and Duracell!
16:56