This is my very first official journal publication! As a kid I was reading this weekly magazine on science named "Science et Vie Decouvertes" (in French). One time there was a rubric on boats along with a challenge to build your own small boat. Kids were then asked to take a picture of the device and send it to the magazine. The journal ranked them and published the best one according to their own set of rules. The boat I built, with a major help from my dad I must say, has a small engine built from an elastic rubber band and an helix made from a can. You would manually turn the helix stretching the rubber band along an axle and then when set loose, the helix would turn back the other way propeling the boat! I was only 8 years old when I built it and I remeber being very proud of seing my construction in the next issue of the magazine!