- Can you solve the rogue submarine riddle? Difficulty level: Master - Alex Rosenthal
- The secrets of the world’s most famous symphony - Hanako Sawada
- You could have a secret twin (but not the way you think) - Kayla Mandel Sheets
- Earth's mysterious red glow, explained - Zoe Pierrat
- What makes a language... a language? - Martin Hilpert
- The rise and fall of the Lakota Empire - Pekka Hāmālāinen
- The infamous overpopulation bet: Simon vs. Ehrlich - Soraya Field Fiorio
- Is this the most successful animal ever? - Nigel Hughes
- How we can detect pretty much anything - Hélène Morlon and Anna Papadopoulou
- Can you outsmart the slippery slope fallacy? - Elizabeth Cox
- How the COVID-19 vaccines were created so quickly - Kaitlyn Sadtler and Elizabeth Wayne