Two Legal Gun Modifications
HowStuffWorks explains two ways that gun owners are modifying their semi-automatic weapons to fire like automatic ones.
HowStuffWorks: How Porta Potties Work
You can find porta-potties at festivals, construction sites and concerts across the planet – but how do they work? Get a closer (non-messy) look here.
HowStuffWorks: How Printer Ink Works
Printer ink sounds pretty mundane but as it turns out there's a lot of science and technology behind it. From nozzles projecting ink at incredible speeds to reasons why refilling cartridges isn't a great idea, we explain how printer ink works.