How Stuff Works

Shrunken heads in the permanent collection of Ye Olde Curiosity Shop, Seattle, Washington. (Joe Mabel)
Shrunken heads appear in movies and video games, such as Beetlejuice, Harry Potter and the Prisoner of Azkaban, and Diablo 2. People associate shrunken heads with fictitious scary tribes, but the Jivaroan tribes in the Amazon rainforest really did make them. You may be surprised to learn head shrinking occurred […]

How Shrunken Heads Are Made

Thermal polish is sometimes sold as mood polish. (LelĂȘ Breveglieri)
Thermal nail polish is a type of polish that changes colors according to temperature. It’s like wearing a mood ring on your nails, except most thermochromic polish only switches between two colors rather than displaying the whole rainbow. The cool (or hot!) effect involves a bit of chemistry. Here’s how […]

How Does Thermal Nail Polish Work?