The Pale Blue Dot
Carl Sagan on the only home we have ever known (thoughts and images from Cosmos; 3:31 mins)

Lohmann on Carbon Trading
Larry Lohmann on how carbon trading works, why it is an ill-conceived response to Climate Change, and why Bush and Gore are not as far apart in their policy prescriptions as some of us believe.

On Nuclear Energy
A compelling presentation on why nuclear energy must be a significant part of a clean energy solution (by Gwyneth Cravens and Rip Anderson).

Rediscovering Golem
What is life anyway, and how did it really happen upon this world? As a physical phenomenon, is life an accidental and rare occurrence?