Between 1970 and 2021, the number of people living in cities increased from 1.19 billion to 4.46 billion, while the Earth's surface temperature climbed by 1.19 degrees Celsius above its preindustrial levels. Because of the prosperity they helped generate, cities have been a major cause of this climate change. However, it is also in cities that many of the solutions to the climate crisis-in terms of both adaptation and mitigation-will be found, not...