Dr Aleks Krotoski explores how the internet is reshaping almost every aspect of our lives. Aleks charts the extraordinary rise of blogs, Wikipedia, and YouTube.

Twenty years on from the invention of the World Wide Web, Dr Aleks Krotoski looks at how it is reshaping almost every aspect of our lives. Joined by some of the web's biggest names - including the founders of Facebook, Twitter, Amazon, Apple and Microsoft, and the web's inventor - she explores how far the web has lived up to its early promise.

In the first in this four-part series, Aleks charts the extraordinary rise of blogs, Wikipedia and YouTube, and traces an ongoing clash between the freedom the technology offers us, and our innate human desire to control and profit.