LISTEN
Geoff Watts asks why the source of new medical drugs is drying up.
Melvyn Bragg and guests discuss the political philosopher Niccolo Machiavelli.
Melvyn Bragg examines how humans have understood and fought disease throughout history.
1 to 10 of (51) "M" programmes Show All
BBC © 2012 The BBC is not responsible for the content of external sites. Read more.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.