A closer look

Desperation forces military leaders to put their absolute blindest faith in frozen water. Struggling against German U-boats, Winston Churchill actually greenlit a project to construct a massive 2,000-foot aircraft carrier out of 'pykrete'—a bizarre mixture of ice and wood pulp. While the material was surprisingly bulletproof and slow to melt, the absurd logistical nightmare of refrigerating a massive floating iceberg inevitably sank the concept.