- Alan Woodward – Is It Quantum Computing Or Not?
- Jag Bhalla – What Rational Really Means
- Samuel Jones – Bush-crow diaries: Settling in with the Borana
- Kalliopi Monoyios – Is Homosexuality Natural? Yes. So is male lactation.
- Kyle Hill – Treebeard Joins the NRA
- Alex Wild – On not overdiffusing flash in macro photography
- Ashutosh Jogalekar – An invasive ladybug uses a biological weapon to kill off competitors
- Jennifer Ouellette – C’mon Baby Light My (Magnetic) Fire
- Bora Zivkovic – Bora’s Picks (May 17th, 2013)
- Susana Martinez-Conde and Stephen L. Macknik – Vision is all about change
- Eric R. Olson – Why Barns Are Red, and More – The Countdown, Episode 22
- Larry Greenemeier – With Drones Circling, How Should Lawmakers Respond?