There is an absolutely fantastic four-part series on Radio 4 this week (running at 9am every morning) - all the details here - marking the 200th anniversary of the birth of Charles Darwin ...
... if you've missed any so far this week, you can listen to all the programmes from the link above ;-)
Such a simple, yet startling idea for its time, and it has explained so much. Does anyone know of an idea that has a bigger ratio of 'what it explains' divided by 'what it assumes'?
I certainly don't.