One website that is pay-for but is wonderful in my opinion, and has a demo (try rotating, turning features on and off in the display, zooming in and out, etc.): http://www.visiblebody.com/

A couple of "Library of Curious and Unusual Facts" books which seem to have stimulated DS6's interests a bit:
Mysteries of the Human Body
The Mystifying Mind

A couple of decent beginning references:
The Visual Dictionary of the Human Body
First Human Body Encyclopedia

There's also one big coffee table book that I picked up on clearance at Barnes and Noble that DS seems to like, but I can't remember the title off the top of my head. I'll try to remember to dig it out and post a link later.

There are also many interesting coloring books available (I can't vouch for them because we don't do much coloring here, but they look pretty neat).

Here are a few general science-resource threads from the past, which might help:
http://giftedissues.davidsongifted.org/BB/ubbthreads.php/topics/95760/1.html
http://giftedissues.davidsongifted....5472/thread_of_fav_science_website_.html
http://giftedissues.davidsongifted.org/BB/ubbthreads.php/topics/101918/Need_Science_HELP.html

Striving to increase my rate of flow, and fight forum gloopiness. sick