On Instagram, "impressions" are when any of your content is shown to a user. It doesn't take unique users into account — that's called reach.

Most people think the U.S. never adopted the metric system — but that’s not the whole story. Long before Europe standardized its measurements, America quietly implemented a system based on the very ...

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

Campaigners have hailed a decision to allow traders to continue using pounds and ounces as a "monumental victory". The move to shelve EU plans to enforce metrication by 2009 comes after a long ...