Winter is upon us. And though you may find yourself whiling away these cold months with nothing more than hot cocoa and stories around the fire, it may be that you are called to battle. Perhaps you ...

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 ...

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 ...

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 ...

Steel was in short supply during the height of World War II, and there was nothing to be done but invent a replacement. One proposal was called Pykrete, a mixture of ice and sawdust that melted ...

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, ...