I'll admit it: I haven't taken my Christmas tree down yet. I was feeling guilty, too, until I realized that just means I still have a chance to strap 32 rocket engines to it.
Turns out all it takes to launch your Douglas fir 100ft. into the air is a car battery, 32 engines wired in parallel, and a wee bit of differential calculus. It's like my grandpa used to say: the holidays aren't over until you say they're over, or until something explodes. [The Awesomer via The Daily What]


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