Common in the US but banned in the EU, this animal feed additive makes for muscular pigs and beefy international trade disputes.

Brian Clegg discovers what a six-membered silicon ring can tell us about alien life

Frances Addison on the aromatic compound found in both buttered popcorn and the bearcat's scent glands, and responsible for the distinctive smell of both

News that this cheap, ubiquitous steroid drug may reduce deaths in Covid-19 cases has been greeted with cautious optimism. Ben Valsler looks at the history of dexamethasone and the promising Recovery trial results.

Mike Freemantle on the art, history and science of this delicate, translucent ceramic material

Brian Clegg introduces the humble mineral that delights both astronomers and archaeologists

Mike Freemantle introduces the peptic ulcer treatment cimetidine, which – as Tagamet – became the first 'blockbuster' drug

The World Health Organisation hope to eradicate human African trypanosomiasis, better known as sleeping sickness, within our lifetimes. Jamie Durrani looks at a drug that may make it possible.

Georgia Mills investigates the psychoactive found in ayahuasca that may mirror near-death experiences

Katrina Krämer investigates how industrial-strength bleach became promoted as 'miracle mineral supplement' – a supposed 'cure' for autism, cancer and even Covid-19.