Tom R. asks: Who invented tasers? Early use of an electronic control device, like the TASER, by law enforcement occurred in the 1960s when American police officers used electric cattle prods to disperse Civil Rights activists. As for the earliest cattle prods, this came about when inventor John Burton of Wichita, Kansas received a patent (US427549 A) in the late […]

Katy E. asks: Are there any differences between razors and shaving cream for men and women beyond cosmetic? Shaving companies almost universally put out both a men’s and women’s version of each of their products, with the women’s version generally costing quite a bit more. But is there actually any difference between the so-called “gendered razors” and shaving cream or […]

Jim R. asks: Why is it “righty tighty, lefty loosey” with screws? One of the six simple machines, a screw is nothing more than an inclined plane wrapped around a center pole. While today screws come in standard sizes, and typically are tightened by turning clockwise (and loosened by turning counterclockwise), this is a recent invention. A great example of […]

Cunningham’s Law is an internet adage that states “The best way to get the right answer on the Internet is not to ask a question, but to post the wrong answer.” It’s an interesting hypothesis for sure. And, if you’ve spent any time on the internet whatsoever, you’re likely well aware that posting something incorrect online is a sure-fire way […]

Jill R. asks: Why do police officers wear blue uniforms instead of some other color? Police services like the NYPD and the LAPD are bona fide pop culture staples that have been featured in countless movies and TV shows. Their distinctive blue uniform is known the world over, but have you ever stopped to think, “Well, why is it blue?”  […]

MK23 asks: How do they figure out the maximum occupancy for a building? Generally speaking, the maximum occupancy of a room or building is primarily determined by the available exits, with each exit accommodating only a certain number of people before bottlenecking occurs. The other key component in determining the max occupancy of a building or room is the intended […]

Glossyhorses asks: Why can’t you have your fences over 6 feet tall in the backyard and half that in the front? The primarily purposes of a fence include to keep animals in, people out,  and perhaps even so others can’t see into your yard. But if this is the case, why are there laws that limit how tall fences can […]

Guy C. asks: I live in America and was just wondering how far below and above my land do I own? On paper, the concept of land ownership sounds very simple- you pay money and in return you’re given unfettered access to a predetermined amount of land. But how much of that land do you actually own? Do you own […]