Rhiannon Tomtishen (left) and Madison Vorva.

It’s that time of year again — time to weigh your love for Girl Scout cookies against your love for the rainforests. That’s right: As we’ve reported in the past, your Samoas are deforesting Sumatra and your Tagalongs are killing orangutans.

Girl Scout cookies are made with palm oil, which has seen a huge spike in demand as both a biofuel ingredient for Europeans and a trans fat-free ingredient in processed foods (like high-fructose corn syrup and similarly evil ingredients, palm oil is everywhere once you start looking for it). As a result, thousands of acres of rainforest — mainly in Southeast Asia — have been razed to plant palm fruit trees. In addition to destroying endangered species habitat and old-growth trees, many palm oil plantations have been known to employ children and treat their workers badly.