Essence Play Pause Unmute Mute All Categories 2 videos found 4 min Carl Sagan’s message for the world 1980 18 views Wise words from Carl Sagan that are now even more true and important than 40 years ago.... Geometría Sagrada – Secuencia Fibonacci – Naturaleza Fractal y Proporción Áurea 38 views Simply a wonderful video combining the magic of nature and cosmos in ...