This episode discusses the peopling of the Americas and the idea of the Kelp Highway, Clovis theory etc.  There are competing theories based on archaeological evidence that makes sense when bounced against climate change that occurred and how it affected Beringia and the Bering Land Bridge.  How some folks stayed put and others left to explore and search their world without any evidence of what was in front of them to include any number of new beasts that could eat them!  

Why did they do it?  Is searching the Internet the modern equivalent?  I think it is.  Amazon is a great example of how we dig around until we find a "deal" and then we tell stories to our little tribes about how successfully we were and what a great deal we found.  Reminds me of hunter tales and what we imagine our prehistoric ancestors doing that served the same purpose.  The "deal" in that case would be "where" to find good hunting and gathering grounds and pass that information to the tribe.  "Hey Bob, you need a 'widget' here's a link it is the best deal out there"  - "Hey Bob, you want a good "mammoth" here are the directions".

LINKS/RESEARCH

Peopling the Americas 

Kelp Highway Peopling

Ancient DNA South America 

Spirit Cave Mummy Nevada

Video Games like Primal need

Clovis Points

Smithsonian Clovis

Atlas of a Lost World - Craig Childs