I’ve written about this several times over the years, but it’s time to write about it again. I’ve retold the story four times this month including once to two elementary school teachers. Too many ...

Keuffel & Esser Company, which had its headquarters in New York City, was a leading American maufacturer of slide rules and drawing instruments. Between 1961 and 1971, the company gave the Smithsonian ...

Harvard College meant to take no chances. As a postwar requirement, every freshman living in Harvard Yard’s hallowed but inflammable old halls had to know how to make a quick exit by rope. Last week ...

You have that slide rule in the back of the closet. Maybe it was from your college days. Maybe it was your Dad’s. Honestly. Do you know how to use it? Really? All the scales? That’s what we thought.

Master the Blake’s Hitch knot — a reliable and versatile slide-and-grip knot perfect for climbing, arborist work, or securing lines. This step-by-step tutorial will show you how to tie it quickly and ...

The game of football is constantly evolving as it gets more aggressive as players get faster and stronger. But, the core issue of player safety, especially for the league's most valuable assets, ...

Try this quick experiment. Do a Google search for ‘Steve Jobs presentation slides.’ Hit images. You’ll find hundreds of photos from Jobs’ now-famous keynotes. Look closely at the slides and you’ll ...

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...

Woman divorced at 28 starts dating again—unprepared for realization The government shutdown is about to be the longest ever. Follow live updates Poll Deals Another Major Blow to Congress Trump sends ...

Slide-Rule-Calculator is an interactive mathematical tool that emulates the functionality of a slide rule, a historical mechanical device used for rapid calculations. This web app allows users to ...

Engineers are probably more grandiose in their dreams than most major poets or opium smokers. Since that ambitious and ill-fated building project, the Tower of Babel, they have thought up endless ...