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While Trump leads in delegates, the Republican Party has yet to coalesce around him as nominee...and many are predicting a contested convention...which is what exactly? Today, we'll talk to a political scientist about the nuts and bolts of how a contested convention might go down. 

Also today, a philosopher on why, despite historically unprecedented access to information and knowledge, we'll never be able to Google our way to the truth.

Plus, are we at the end of the app bubble? We'll hear why, less than ten years after the app store launched, small and medium sized developers are getting squeezed out. 

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There’s something keenly American about riding the rails. We meet kind-hearted hoboes in Steinbeck’s “The Grapes of Wrath,” hear the restless spirit in Woody Guthrie songs and cheer on Chaplin’s little tramp striking out for the Yukon.

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You don’t have to be a geek to know about the San Diego Comic Con, the annual convention that attracts celebrities, industry big-wigs, and fanboys and girls dressed as their favorite comic book superhero or villain.  

In Annaheim, California this August, thousands of costumed super-fans descended on another massive expo… some decked out as superheroes, but more princesses, pirates, mermaids and mice.

The D23 Expo is a bi-annual celebration of all things Disney.  Jordan Zakarin is Entertainment Reporter for Buzzfeed, where we found his exploration of the peculiar brand of obsession that sets Disney super-fans apart. 

Jonathan Lynch / NHPR

The sheer volume of humanity packed into the Boston Convention Center doesn't really hit you until you're in and amongst the crowd. Everyone from game developers to Pokemon trainers and Final Fantasy cosplayers are here in force, mingling and chatting in lobbies and food courts. They've made the pilgrimage to the Penny Arcade Expo to celebrate gaming in all of its forms.

Photo by Rodney Brown, courtesy of Flickr Creative Commons

The annual San Diego Comicon attracts crowds in excess of 100,000 people.  But there are plenty of colorful cosplay outfits, industry peeps, classes, and special events expected at a much closer and much smaller convention in Portland, Maine – Tristan Gallagher is co-owner of Coast City Comics in Portland.  He’s one of the organizers of the second Coast City Comicon – which is raising funds on