A nerve agent was used to poison a Russian former spy and his daughter. What are they and what do they do?Read more
Health reporter, BBC News
The BBC's Aaron Heslehurst explains how nylon became a million dollar idea.
Can you spot the few real elements in the video? Most of these 24 names had been announced as new discoveries by chemists in the past but in the end they turned out not to be new elements.
The lead author of a new study says it will speed up how quickly new, safe drugs can be made.
From wet dogs to old books, chemistry teacher Andy Brunning designs posters to explain where everyday smells come from.