In the early 1990s, Castro embraced environmentalism, campaigning against the waste of natural resources and global warming and accused the U.S. of being the world's primary polluter.
Pada awal era 1990-an, Castro mencanangkan gerakan lingkungan hidup, berkampanye melawan pemanasan global dan penghambur-hamburan sumber daya alam, dan menuduh AS sebagai penghasil polusi utama di dunia.