Happy Carl Sagan Day! No Symphony of Science though....
The 4th Dimension
God or Gods
The Pale Blue Dot
The Drake Equation
The Pseudo-Science of Astrology
The Great Library of Alexandria
We Humans Are Capable of Greatness
Google and Googleplex
The Search for Extra-Terrestrial Intelligence
Special Guest Spot from Harry Carey
`Helped the Heart of Man to Know Itself'
1 hour ago