As a crop, cannabis has enormous carbon emissions

Read the full story at Ars Technica.

Back in the pre-legalization days, cannabis production meant finding a rarely visited patch of land and growing outside, or it meant taking cultivation indoors—typically to a basement where your product wouldn’t be visible from the outside world. But the power-use involved in lighting a basement growing space was legendary.

With legalization, it’s really only the scale that has changed. Most legal marijuana is grown indoors, with some pretty hefty electrical use to match. Now, researchers have attempted to quantify the greenhouse gases emitted, and they came up with some impressive figures. Based on their calculations, cannabis production results in over 2,000 kilograms of carbon dioxide emitted for every kilogram of product (defined as dried flowers), and its legalization has had a measurable effect on Colorado’s greenhouse gas output.

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