Making a competitive car is very simple and you don’t need to be a physics teacher or engineer. All you need to do is get on the internet and search “pinewood derby”. It’s all there.
This does take time and you do find that most sites are ones where you have to pay for a book to [...]

     
Leave No Trace is not simply a program for visiting the backcountry, it is an attitude and a way of life.
I plan to expand this area considerably, I have lots of material to share on this topic.
Here’s one that is pretty good - an extensive powerpoint done on the entire program:
Leave No Trace Powerpoint (large [...]