Hello, I'm Mark Keller, a fairly casual Wikipedia editor (mostly working with spelling and grammar correction).
I am, however, thinking about planning to possibly start writing a page on the now defunct kid's magazine Explore! Some references for which I've got stored below:
General magazine info:
http://findarticles.com/p/articles/mi_m3065/is_15_29/ai_68025440
About Nat Belz (the editor):
http://www.zoominfo.com/people/Belz_Nat_169427089.aspx
http://www.zoominfo.com/people/Belz_Nat_588240646.aspx
http://www.linkedin.com/pub/4/559/9B3
http://worldji.com/Pastspeakteach.asp
Articles about Explore!: http://www.mountainx.com/features/2001/0905explore.php
If you know anything more about Explore! magazine (besides what can be deduced from reading the issues), or know of another site that mentions it, please please please contact me, at markekeller {at} gmail {dot} com!