video links

http://www.ted.com/talks/juan_enriquez_shares_mindboggling_new_science

http://www.ted.com/talks/anant_agarwal_why_massively_open_online_courses_still_matter

http://www.ted.com/talks/mihaly_csikszentmihalyi_on_flow

On collaborative learning / sharing https://www.youtube.com/watch?v=KDhvvo5FBTY