What’s nearly as strong as concrete, but floats on water? Pykrete! Pykrete is made up of 86% frozen water and 14% wood pulp (such as sawdust or paper). It’s easy to make, durable and strong. That’s ...

Lasting five years, eight months and five days, the Battle of the Atlantic was the longest military campaign of WWII. Allied supply convoys were being continuously threatened by German U-boats and ...

Conceived as a secret weapon against German submarines, Project Habakkuk aimed to create a massive aircraft carrier made of pykrete—an ice and wood pulp mixture with remarkable strength. Proposed by ...

Imagine an aircraft carrier made of ice that’s bullet‑proof and self‑repairing - built for only 1 % of the steel cost. That was Project Habakkuk. But trials showed pykrete sagged unless constantly ...