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 ...

Stories of Nazi super weapons have persisted since World War II, and although these are mostly fiction, they can make it seem like only the Axis had wild ideas. Not so! Winston Churchill once gave the ...

Winston Churchill had a project to produce a 2.2 million ton pykrete (ice and wood pulp) aircraft carrier that would have been 1200 meters long and 180 meters wide. This would have made it 3.5 times ...

How do you top building the world's largest ice dome? Well, if you're the Eindhoven University of Technology, you build a 40-meter (131-ft)-high model of Barcelona's Sagrada Familia basilica ... and ...

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 ...

It’s winter, and in some places that means the beginning of snowball-fight season. If you’re going to win a snow battle, you’ve got to have a snow fort. Here’s how to make the best one. It will ...

At some point during World War II, loony solutions to practical problems really started to shine. There were pigeon-guided missiles, shark repellent, and giant aircraft carriers made of ice. Well, ...

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 ...