Global environmental impact rises from two multiplying factors: population growth and the increasing amount each person consumes, produces, and wastes. Since 1969 both the number of people and the per-capita footprint have climbed together, so the total burden grows faster than population alone would predict.
Modern affluent life is organized around a narrative that getting more of everything (food, energy, goods, growth) is self-evidently good. Naming this unexamined default as a 'story' exposes it as a chosen assumption rather than a law of nature, which makes it possible to question.
Global agriculture already produces enough calories to feed everyone, yet hunger persists alongside massive waste. The problem is distribution and loss, not productive capacity, so producing still more food does not by itself end hunger.
Dramatic twentieth-century increases in crop yield per acre were driven by synthetic fertilizer, irrigation, pesticides, and selective breeding rather than more farmland. These gains carry hidden costs in fossil energy, water depletion, and runoff that the headline yield number conceals.
Climate and resource figures become legible when divided by population and traced to individual daily choices in eating, driving, and buying. Reframing planetary data as personal arithmetic reveals how unevenly consumption is distributed and makes diffuse problems feel owned.
Jahren reduces individual response to two linked levers: consume less energy, food, and goods than habit dictates, and redistribute the surplus toward those who have less. She presents this not as sufficient to solve climate change but as the honest starting point available to one person.