Richard Branson talks to TED's Chris Anderson about the ups and the downs of his career, from his multibillionaire success to his multiple near-death experiences -- and reveals some of his (very surprising) motivations.

Lex Megatrends - Cryptocurrencies such as Bitcoin have gained traction in finance worldwide thanks to dissent, greed, idealism and fear of missing out. But in the absence of centralised authority, where will it all end?