7. Complex things
explained.
CGPGrey's channel
www.youtube.com/CGPGrey
8. Explore the wonder
of our universe
Carl Sagan
CarlSaganPortal's Channel
http://www.youtube.com/user/CarlSaganPorta
l?feature=edu www.youtube.com/CarlSaganPortal
42. www.edutechnia.org
We can help you create a customized YouTube channel
www.facebook.com/edutechnia
www.youtube.com/edutechnia
Contact Jorge Madrid
jmadrid@edutechnia.org