Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. I consider myself ...

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, ...

Temperature conversion represents one of the most frequently encountered mathematical operations in academic science, yet traditional methods often prove cumbersome during time-pressured examinations.