<iframe width="580" height="385" src="https://www.youtube.com/embed/i2bOvq1QMdI?autoplay=1" frameborder="0" allowfullscreen></iframe> <br>Life is ancient – it first emerged on Earth billions of years ago. We consider how it began and whether we might find life elsewhere. Video by Thomas Lewton Animation by Charity Atukunda #bbcreel #bbc #bbcnews <br><a href="https://www.youtube.com/watch?v=i2bOvq1QMdI">source</a>