This paper explores the bidirectional relationship between environmental concern and transhumanism, a philosophy advocating the transcendence of human biological limits through technology. Two experiments reveal critical insights. Specifically, Study 1 shows that exposure to transhumanist concepts increases the relative importance of technology (vs. nature), which subsequently decreases environmental concern and green purchase intent. Study 2 shows the inverse – that increased environmental concern, increases participants willingness to adopt transhumanist modifications. Together, the findings suggest a feedback loop: transhumanist ideals may erode environmental concern – which may increase environmental degradation and further increase acceptance of transhumanist interventions. These findings shed light on potential societal responses to environmental crises and technological solutions.