What makes an idea, a brand, or a behavior catch fire? This hour, TED speakers explore the mysteries behind the many things we spread: laughter and sadness, imagination, viruses and viral ideas.

Source: www.npr.org

What made the world the way it is?  The spread of people, ideas and goods–Geographers refer to this as diffusion and these 5 podcasts all center on what factors promote the spread of some phenomena, and what obstacles and barriers exist to the diffusion of others. 


Tagspodcast, medical, diffusion, culture, popular culture, globalization.