Mere decades from now, millions of people all over the world will be forced to move because of climate change. Entire islands will disappear into the sea. Once-in-a-century hurricanes will occur on a regular basis, decimating cities and wiping out peoples’ homes. Wildfires fed by prolonged drought will rage through communities. No one will be immune: in countries rich and poor, climate change will usher in a new era of migration.This is not just a future projection; it is a current reality. Massive human displacement caused by climate change is already underway. Julian Hattem, author of Shelter from the Storm: How Climate Change Is Creating a New Era of Migration, discusses this situation, informed by his journalism from the front lines of the climate crisis.