In this special podcast produced in partnership with Waters Corporation, find out how understanding the chemistry and materials that go into batteries marks the first step towards making them safer and increasing energy density, and unlocks new opportunities for reuse and recycling

How did a tree bark from Sri Lanka become one of the essential flavours of the festive season? We explore the history of cinnamon and the compound that gives it its distinctive taste and aroma  

A compound so explosively unstable that nobody has been able to measure how sensitive it is without it, well, exploding.

How one of mankind's oldest pigments helped shepherds secure their sheep and inspired one of the most popular songs of the twentieth century

A sweet compound that provides ample energy for extreme endurance events – find out how maltodextrin helped Anna Ploszajski swim the English channel

Liquid salts, ionic melts, fused salts, or ionic glasses – call them what you like, these much-hyped solvents show great promise. Katrina Krämer speaks to chemical engineer Jason Bara about ionic liquids.

An antimicrobial compound that kills bacteria and viruses quickly – found in some of the most colourful antiseptic solutions 

Does asparagus give you foul-smelling urine? Helen Arney investigates asparagusic acid, and the lavatorial genetic lottery that controls whether or not you can smell its distinctive aroma

A sweet treat with a deadly trick for Halloween – glycyrrhizic acid, or glycyrrhizin, is found in black liquorice and sweeter than sucrose, but can cause heart problems and even prove fatal if consumed in excess

Also known as 'milk of amnesia', propofol helps to prevent perception of pain in surgery – just don't forget its dangerous side

Hepatitis C drug sofosbuvir made waves when first launched – quicker to work and with fewer side effects than existing drugs, but it came with a hefty price tag