How Concussions Work
Knocked Out: Concussions in Contact Sports
What does it feel like to get a concussion? What are the mental and physical effects of this injury? And how can we best diagnose and treat them in the future?
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.