 Ice cubes were tumbling off of Jane Fonda, says Eckblad, and then I hear peals of laughter coming from behind a cardboard nut display, and Greta Thunberg steps out laughing like a hyena. Jane and I wanted to bring attention to alternatives to air conditioning, Thunberg explains. She's such a climate change warrior, she'll do anything, but maybe we hadn't thought it out quite enough.