Units of speed are always a unit of length per unit of time. Different units of length and time may be chosen depending on the situation. This makes it easier to read the measurements. For example, ...

An underrated feature in Google Maps is the ability to measure the distance between two or more points. It can aid tremendously with planning, whether you’re aiming to walk or go on a road trip.

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...