We tested 10 behavioral interventions to mitigate #climatechange in 63 countries (N = 59,440) The interventions’ effectiveness was small, largely limited to nonclimate skeptics, and differed across outcomes: -Beliefs were strengthened mostly by decreasing psychological distance (by 2.3%) -Policy support by writing a letter to a future-generation member (2.6%) -Information sharing by negative emotion induction (12.1%) -No intervention increased the more effortful behavior—several interventions even backfired by reducing tree planting! Our paper is in @ScienceAdvances : science.org/doi/10.1126/scia… It was led by @vlasceanu_mada and @kim_doell and included a massive team of over 250 collaborators from around the world!