Some years ago, I started a blog called Harmonic Structures, to explain structural concepts in a funny and intriguing way. Here you have the posts I published back then.

One, two… buckle! - Careful when buckling. (Post originally published at harmonicstructures.blogspot.com on 02/09/2010)
Do not buckle, it’s the law - Some thoughts about buckling... what's that? (Post originally published at harmonicstructures.blogspot.com on 01/22/2010)
Center of falling - Do you wanna be the center of gravity? (Post originally published at harmonicstructures.blogspot.com on 12/08/2009)
Good old wood - Some thoughts about wood's good design. (Post originally published at harmonicstructures.blogspot.com on 11/18/2009)
Visual perception test #1 - Who's pulling and who's fooling? Let's guess. (Post originally published at my blog harmonicstructures.blogspot.com on 11/10/2009)