BBC - Human Universe (2014) Part 3 Are We Alone

In this spectacular series, Professor Cox offers an original new perspective on human life: the story of a group of apes that evolved to leave their home planet and step out into the universe.

Humans are curious creatures. Of all the species on Earth, we alone ask questions. This series tackles the greatest questions we've ever asked. Where are we in the universe? Why are we here? How did the human brain arise and why did we become consciousness? Will our search for alien life be successful or are we all alone? And what is our future?

In search of answers, Brian sets off across the globe collecting clues from the people that he encounters and linking them to the latest scientific thinking on each question. Combining beautiful location photography, imaginative CGI and his own magical storytelling Brian presents a new understanding of the ultimate wonder of the universe - us.

Part 3: Are We Alone

Is mankind alone, or are there aliens out there, either waiting to be discovered, or on their way to find Earth? Professor Brian Cox spends this episode asking such questions, and what he discovers may raise a few eyebrows. He begins by exploring the human race's efforts to find neighbours in outer space, including the launch of two golden discs containing a greeting from Earth in the 1970s; they are still travelling and are now the most distant man-made objects from the planet. Brian also meets members of the Search for Extra-Terrestrial Intelligence, who have been monitoring radio signals for 50 years without success, before discussing the ingredients needed to make an intelligent civilisation with astrophysicist Dr Frank Drake.

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