Halloween is almost upon us! Still stumped about the best way to decorate your premises for this spookiest of holidays? We have here a set of six Grist-exclusive patterns to help you carve the perfect eco-pumpkin. Each pattern comes with instructions. Just click on your favorite, print the PDF, sharpen your knife, and get to it.

Then all you’ll have left to do is choose the perfect costume. (Don’t go as Bill McKibben, you’ll steal our thunder.)


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Skull and corncob bones


Kerry-Boxer climate pumpkin


No more CO2!


Because it’ll happen eventually …


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Angry polar bear … you’re killing me!

polar bear

Burning world

burning world