Back when I was a Catholic-school kid in northern Wisconsin, my school lessons briefly focused on the metric system. This was ...

Using both the imperial and metric system for measuring and weighing can cause confusion THE imperial and metric systems can often cause confusion when it comes to taking measurements. Here's why we ...

Make every recipe perfect with our liquid measurement conversion charts that show you how to measure correctly and convert ...

The metric system is used in 95 percent of the world. The United States is among the few countries that doesn’t use this system. In a globalized world, countries don’t have to convert between each ...

We’ll blame Thomas Jefferson. Oh, not entirely; there are more than 200 years’ worth of criticism to dole out. But in wondering why the United States is not entirely on the metric system, the blame ...

Who doesn’t like a math pop quiz when driving down to the Mexican border? If you turn onto Interstate 19, which runs 63 miles (101 kilometers) from Tucson, Arizona, down to Mexico, the road signs ...

Atlas Obscura on Slate is a blog about the world’s hidden wonders. Like us on Facebook and Tumblr, or follow us on Twitter. For better or worse, the United States remains one of only three countries ...