- 4 epidemics that almost happened (but didn't) - George Zaidan
- Is it normal to talk to yourself?
- The year without summer - David Biello
- Why were there three popes at the same time? - Joëlle Rollo-Koster
- What's missing in medical research? - Greg Foot
- The rise and fall of the Mughal Empire - Stephanie Honchell Smith
- Why do we have crooked teeth when our ancestors didn’t? - G. Richard Scott
- Why did the British Empire burn, sink, and hide these documents? - Audra A. Diptée
- Can zoos save species from extinction? - Nigel Rothfels
- Why do we eat popcorn at the movies? - Andrew Smith
- Whatever happened to the hole in the ozone layer? - Stephanie Honchell Smith