Carl Sagan discusses the structure of the human brain and its immense complexity and potential.
posted by jonny
1 decade 7 years 1 month 2 weeks ago • 2,915 views
Documentaries - the truth and other entertainment
Created: 1 decade 7 years 3 months 1 week ago
Updated: 1 decade 5 months 3 weeks ago
Views: 10,774
Updated: 1 decade 5 months 3 weeks ago
Views: 10,774
Displaying 1 of the 201 videos in this playlist:
1 decade 7 years 1 month 2 weeks ago • 2,915 views