Credits 29 July 2014 Western_Rocks,_Scilly,_with_the_Bishop_Rock_Lighthouse_-_geograph.org.uk_-_1608029 Bolnisi Bolnisi Hill Video Credits 30 July 2014 Website Credits Credits 11 Aug 2014

we’re in the midst of a technological revolution akin to Europe in the 15thcentury, when the printing press made the broad distribution of writing possible. Within the past few years, the technology for creating, distributing and mixing

 

 

 

audio, video and text has become easy and inexpensive - BETH HARRIS, Khan ACADEMY  

Credits 2 Sept 2014