Hi everyone! I haven't been here in a while, and I see there've been a lot of changes. The place looks as groovy as ever. I have just been assigned a bridge builiding project. We're supposed to make the bridge out of only wood that ways 25 grams or less and be able to hold 15 kilograms or more of weight. My teacher said that in the past people have built a bridge that wieghed 9 grams and held at least 15 kilograms. As a result, my group and I feel we should build one 9 grams or less.....however we face but one problem. We don't know what kind of wood to use. The only one we know of is Balsawood and I've recently heard that it's not the strongest type of wood, regardless of its light weight. So if anyone here knows of a type of wood that is both light weight and strong, please suggest it. Thanks.