Tasers are commonly used by police around the nation as a "non-lethal" weapon to stop confrontation. But their use has been marked with controversy, lawsuits and public scrutiny of law enforcement ...

At the United Nations, Pakistan has called for a moratorium on the production of Lethal Autonomous Weapon Systems (LAWS), known as "killer robots", that are capable of making their own combat ...

The latest news and headlines from Yahoo News. Get breaking news stories and in-depth coverage with videos and photos.