Introduction to Permaculture A Book by Bill Mollison modernfarmer.com The conscious design and maintenance of agriculturally productive systems which have the diversity, stability, and resilience of natural ecosystems. It is the harmonious integration of the landscape with people providing their food, energy, shelter and other material and non-material needs in a sustainable way. About PermaculturePermaculture ethicsUsing akido on the landscapePermaculture principlesDesign is a connection between things+25 More 172. Garden Growing WildProtected, yet tuned inHints towards a non-extractive economy farmingnatureecosystemssustainabilityagriculture
Picking locks with audio technology An Article cacm.acm.org The series of audible, metallic clicks made as a key penetrates a lock can now be deciphered by signal processing software to reveal the precise shape of the sequence of ridges on the key's shaft. Knowing this, a working copy of it can then be 3D printed. A Burglar's Guide to the City crimesecuritysound