How hot will people get, how many dying, before someone tries geoengineering? Should scientists test out last-ditch solutions? Long-time journalist, film-maker, and author Dr. Gwynne Dyer says “yes” in his new book “Intervention Earth – Life-Saving Ideas from the World’s Climate Engineers”. You get in-depth discussion plus an update on the field, 20 cautions, and new geoengineering song “Shades of the Future” in this week’s Radio Ecoshock.