What is a chemical substance? In this post, Marabel Riesmeier argues that answering this question is more complicated than one might think.

How are simple substances identified when it is difficult to tell whether a substance has been decomposed or not?

The annual History of Science Society/SHOT meeting is held in 18-21 November. Here, we have gathered a selection of sessions including...

Megan Piorko updates us on the quest to solve a historical cipher. It turns out the secret key was hidden in plain sight...