Most climate change writing is by “adults,” us older folks who poisoned the well in the first place, so how refreshing it is to 20s-something activist Daniel Sherrell’s meditations on the subject, “Warmth: Coming of Age at the End of Our World.” Sherrell is a captivating stylist with a wide-ranging mind, with a capacity to think more deeply about the subject than most of us (and indeed some of his reflections dug a little too deep for me). Structured as a letter to a potential child, the book ranges back and forth through time, and weaves in tales of his activism and his pursuit of understanding, including a wonderfully evoked outback “journey” with indigenous folks in Broome, Australia. Especially noticeable is his rage against my generation, mostly against the immoral denialists and obstructionists, but also a general contempt. I understand and appreciate this, and I found the read to be a fast-flowing and bracing one. Warmth is highly recommended for those of you exploring the gap between doomism and gung-ho activism.