Saliva

Using extensive medical evidence for inspiration, this 14-hour must-have audio book for men (and the women who love them) cuts through the hype and confusion about the most misunderstood aspects of men's health: the vital role of hormones.

Join zoologist Mark Carwardine and Britain's best-loved wit and raconteur, Stephen Fry, as they follow in their great friend Douglas Adams' footsteps, in search of some of the rarest and most threatened animals on Earth. Twenty years ago, zoologist Mark Carwardine teamed up with the late Douglas Adams (author of The Hitch Hiker's Guide to the Galaxy) and together they embarked on a groundbreaking expedition, travelling the globe in search of some of the world's most endangered animals. Now Mark has teamed up with one of Douglas's closest friends – comic genius Stephen Fry – to see how all those animals have been faring in the years since.