Why Don't Penguins' Feet Freeze?

With so many intriguing questions about animals and science, I'm curious how the editors chose to focus on these 115. Was it based on popularity, curiosity, or something else?

The book made me think about the weirdest animal facts I never knew I needed. Are there any questions about animals that you wish had been included?

The humor and approachable style made science so much more engaging. I'm curious whether this tone was a conscious choice to make science accessible and fun.