Margaret Heffernan: The dangers of “willful blindness”

Anas Aremeyaw Anas: How I named, shamed and jailed

Shigeru Ban: Emergency shelters made from paper

Beardyman: The polyphonic me

Jonathan Zittrain: The Web as random acts of kindness

Jane McGonigal: Gaming can make a better world

Susan Cain: The power of introverts