I was surprised by the good stuff in "the Boy's Own book" by William Clark. Beware cultural change regarding safety, though

(Not allof it is science.)
Also, pulled some stuff together after watching "how stuff works "
next project: bioplastic

I strongly agree with looking stuff up as much as possible, kits and especially books seem to usually require heavy finessing. just built sail carts with a measurement error and no provision for hubcaps or shrouds. grrrrr.
Also, I'm finding yardwork failure useful this yr... we made aircraft from maple keys tape and sticks, dug out an accidental compost heap and played with water using bark shells that rotted off. this in the city, (I'm excassively proud)
(sorry, using on-screen kb)