Jeff Masters wrote in Yale Climate Connections that "The New Climate War" "could benefit from more graphics and cartoons as complements to its 267 pages of text. Overall, though, the book still is a must-read for every climate-savvy and climate-dependent. (Only air breathers need apply!)" "New Scientist"'s Richard Schiffman stated, "With the major COP26 UN climate summit due to be held later this year in Glasgow, UK, Mann’s call to get serious about climate change couldn’t be more timely. Let’s hope he is right that the tide is finally about to turn."