The 2021 edition of In Our Hands is the primary text being used by teachers across the United States in the "Climate Essentials" program offered by the Presidio Graduate School. It succinctly: - Summaries the challenges we face from global warming and climate change; - Presents two futures for the human race, both looking back from 2050. One shows what we did that solved the crisis in time; the other, entitled "The Road to Ruin",...