Leah Thomas, known online as @Greengirlleah, is an environmentalist, writer, and founder of the nonprofit organization Intersectional Environmentalist. Leah rose to prominence in 2020 after her viral post calling for racial justice within environmentalism helped spark a global movement, and has since used her vast platform to advocate for climate, race, and social justice. She is the author of The Intersectional Environmentalist and the host of the Green Girl Crafts Club, where she continues to create joyful, inclusive spaces that reimagine what sustainability could look like for all communities.