Human Universe - 3. Are We Alone | BBC.HD.ZigCOM.mp4

First broadcast: 21 Oct 2014
English subtitles

Propsephor Brian Cox explores the ingredients needed for an intelligent civilisation to evolve in the universe - the need for a benign star, for a habitable planet, for life to spontaneously arise on such a planet and the time required for intelligent life to evolve and build a civilisation. Brian weighs the evidence and arrives at his own provocative answer to the puzzle of our apparent solitude.

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