How To: Suspect a Case of Insecticide Poisoning
Insecticides are widespread products which are used daily in our lives. Organophosphorus is the main compound in these products and has toxic effects on our health that may be fatal in some cases.
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How To: Create a PCB Etchant That Automatically Improves After Each Use
Etching your own circuit boards is tons of fun, but etching requires strong chemicals to dissolve the copper plating on blank circuit boards. The normal ferric chloride solution works well, but can be expensive and leaves permanent stains. Luckily, we can whip up our own etchant at home with everyday chemicals! Better yet, our new etchant will turn an eerie green color rather than the dull brown of ferric chloride.
Post-Modern Vandalism: How to Hack Together These Everlasting Light Graffiti Throwies
Graffiti is a great way of getting your message out to the masses. The earliest known graffiti dates back to 30,000 years ago and used the traditional apply-paint-to-wall technique. Though our paint now comes in cans and not from scavenged berries, the actual graffiti process hasn't really evolved from those first cave paintings.
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