Jem has set himself another challenge - and this time it requires your help. Difficulty: low Find a suitable material and make your pykrete bars. Time/effort: The bars should be frozen for at least ...

Project Habakkuk was a wartime proposal to build an enormous aircraft carrier from “pykrete,” an ice-and-wood-pulp composite pitched as strong, slow to melt, and difficult to sink. The transcript ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Gizmodo may earn an affiliate commission. Reading time 8 minutes As ...