This compilation features five liquid nitrogen experiments that show what extreme cold really does to everyday materials.

Heat is not supposed to behave like this. In everyday life, warmth seeps and diffuses, spreading from hot to cold in a slow, smearing process that never looks anything like a crisp sound wave. Yet ...

Scientists hope to prevent deaths from climate change, but heat and cold are more complicated than we thought. It’s the 25th of June and I’m shivering in my lab-issued underwear in Fort Worth, Texas.