Richard Betts is the author of the New York Times bestseller The Essential Scratch & Sniff Guide to Becoming a Wine Expert and The Essential Scratch & Sniff Guide to Becoming a Whiskey Know-It-All.

He is a Master Sommelier and been featured in The New York Times, Food & Wine, Outside, and GQ. He speaks frequently throughout the world. He has two wine projects on three different continents, which have won top praise internationally. Richard makes his home in Amsterdam.

Sue Armstrong is a science writer and broadcaster based in Edinburgh. She has worked for a variety of media organisations, including New Scientist, and since the 1980s has undertaken regular assignments for the World Health Organization (WHO) and UNAIDS, writing about women's health issues and the AIDS pandemic, among many other topics, and reporting from the frontline in countries as diverse as Haiti, Papua New Guinea, Uganda, Thailand, Namibia and Serbia.

Sue has been involved, as presenter, writer and researcher, in several major documentaries for BBC Radio 4; programmes have focused on the biology of ageing, and of drug addiction, alcoholism, obesity, AIDS, CJD, cancer and stress.

Her previous book was p53- The Gene that Cracked the Cancer Code, also published with Bloomsbury Sigma. It has been highly commended by the BMA Book Award.