Your support goes further this holiday season. When you buy an annual membership or give a one-time contribution, we’ll give a membership to someone who can’t afford access. It’s a simple way for you ...

Today's Google doodle celebrates SPL Sorensen, the Danish chemist famous for the invention of the pH scale in 1909. In chemistry, pH is a logarithmic scale used to specify the acidity or alkalinity of ...

Log tables, invaluable in science, industry and commerce for 350 years, have been consigned to the scrap heap. But logarithms remain at the core of science, as a wide range of physical phenomena ...