Black Friday sales officially start Friday, November 28, and run through Cyber Monday, December 1, and Lifehacker is sharing the best sales based on product reviews, comparisons, and price-tracking ...

How long is a piece of string? For builders over the centuries, it was as long as the one they ordered, given that they used precise lengths of string, cord or chain to measure out the dimensions of a ...

If you know your U.S. history, there have been several attempts to adopt the metric system, all to no avail. It's the universal standard for most of the world and way more intuitive, yet the chances ...

Retractable tape measures are easy to use, accurate, and cheap — usually no more than $20. But a Boston startup called Reekon Tools has given this 200-year-old technology a brain transplant. Reekon’s ...