P&C drink and review Crowhill’s homebrewed Tavern Ale, then discuss evolution. 

They start with a quick review of Darwin and his times and how scientists were slowly coming to the realization that the origin of the earth and life spanned a far longer time span than the Bible seemed to allow. 

There are still a lot of things we don’t know about our history, but there are some things we know for sure. 

* The earth is old. 

* Life is old (maybe a billion years). 

* Most creatures that have lived have gone extinct. 

* Creatures have changed over time. 

* Evolution seems to explain certain things about modern biology. 

Other things remain debatable, such as the question of what drives the changes. Modern evolutionary theory seems to be struggling with this question right now. P&C have their doubts about the modern consensus that random genetic mutation is the stuff of evolution. 

P&C try to work through the issues, balancing philosophy, science, and common sense.