As my colleague lay dying on the floor, I tried to comfort him while we waited helplessly for an ambulance. That was only the beginning.

Police say the cameras are a force multiplier that promote safety but civil liberty experts warn of a surveillance state.

A Facebook Marketplace deal gone bad. An apartment complex melee. A confrontation at a bar. In all three, defendants say it was self defense.

In this fascinating video, watch as I take you through the intriguing process of creating a fully working mini cannon from scratch. From selecting the right materials to precision crafting and testing ...