- What is the coldest thing in the world? - Lina Marieth Hoyos
- Why don’t poisonous animals poison themselves? - Rebecca D. Tarvin
- What causes hallucinations? - Elizabeth Cox
- The psychology of post-traumatic stress disorder - Joelle Rabow Maletis
- How do your hormones work? - Emma Bryce
- The science of hearing - Douglas L. Oliver
- Did the Amazons really exist? - Adrienne Mayor
- What is dust made of? - Michael Marder
- Can you solve the wizard standoff riddle? - Dan Finkel
- How to avoid choking under pressure - Noa Kageyama and Pen-Pen Chen
- The journey to Pluto, the farthest world ever explored - Alan Stern