He is one of the UK's best known scientists and on Monday Professor Robert Winston delivered the inaugural Beardmore Lecture to mark ten years of the Golden Jubilee Hospital in Clydebank.
The question he asked was can we survive the 21st century?
He spoke to Scotland Tonight after his speech to discuss the health threats facing us in 2012 and beyond.
More About Scotland Tonight
- David Cameron hails the Union as 'greatest merger in history'
- Douglas Alexander says referendum debates has 'divided' Scotland
- Scotland Tonight: Will family politics decide the referendum?
- More than 120 business people back Scotland to stay as part of UK
- Salmond renews call for Cameron debate after victory over Darling
- First Minister and Alistair Darling clash in fiery second TV debate
- Holyrood recess begins as referendum campaigns go into top gear