The secret ingredient to an indestructible snow fort

Whether you're young or just young at heart, it's winter time and that means one thing — fun in the cold weather. Think snowball fights — from the safety of a super durable snow fort, of course!

Yep, an inventor named Geoffrey Pyke came up with something back in the 1940s that just might revolutionize your snowball fights while the other team is busy cowering behind trees.

Back during World War II, Pkye was searching for a sturdy building material that could replace steel, since it was expensive to make and the supply was low. Pkye was known for being a bit eccentric and came up with a solution dubbed pykrete. At first, pykrete was made from wood pulp and ice, but it was too brittle, so they froze a mixture of cellulose and water to get a very unique, strong construction material.

Pykrete can be molded like concrete and carved like wood. It's stopping power is on the same level as brick, so those enemy snowballs don't stand a chance! And, it melts slower than pure ice, so if you're planning a re-match, your fort will probably still be there days later.

Sadly, Pyke's wonder material was never used on a large scale. It was originally created for Project Habakkuk. The plan was to construct an aircraft carrier out of pykrete in the mid-Atlantic so the British could combat German U-boats. But, the flight range of planes was improved quickly enough that it became unnecessary to build a floating ice island. For shame. At least you can build one truly awesome ice fort.

Via Wired

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