A fascinating and educational talk given by the much celebrated Astronomer, Carl Sagan who discusses how the brain functions and how it has evolved from the natural instincts of reptiles, to the inventive and critical thinking skills of modern Man.

I wonder what the next stage of human evolution will give us?  Wisdom and common sense perhaps?  If only…but there is no reason to wait that long to attain such virtues.

Please enjoy the following fantastic video by Carl Sagan: