Oh, America. You do so confuse the rest of the world, with your “pounds per square inch” and “cups”, instead of sensible ...

212°F is the boiling point of water at sea level. The scale is widely used in the United States, some Caribbean countries, and a few others. It remains common in weather reports, household ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...