What If It Never Rained Again for a Whole Year?

You turn on the kitchen tap, it coughs a little air and goes quiet. For exactly one year, not one drop of rain and not one snowflake reaches the ground anywhere on Earth. The clouds still drift overhead. They just never let go of their water. We follow this thought experiment month by month: rivers that keep running on hidden groundwater, the eighty percent of cropland that depends only on rain, the Rhine, the Mississippi and the Panama Canal running dry, cities living on fifty liters a day like Cape Town in 2018, the Amazon forest that makes its own rain, glacier rivers that become the last water towers, the town in the Atacama Desert where life barely changes, and why the day the rain returns is the most dangerous day of the year. If the water stopped tonight, how many days could your home last? Write your number in the comments, and tell us where you live. 0:00 The day the tap went quiet 1:14 Week 1: the last cloud 2:42 Month 1: the quiet rivers 4:05 Month 2: the fields 5:44 Month 3: the rivers fall 7:33 Month 4: the cities ration 9:13 Month 6: the forest that makes rain 10:36 Month 9: the great move 11:48 Could it really happen? 12:59 Month 12: the first drop 13:53 The real lesson Sources: USGS Water Science School (the water cycle); NASA Earth Observatory; FAO AQUASTAT (rain-fed agriculture); UN World Water Development Report 2022; USGS High Plains (Ogallala) Aquifer; Rhine at Kaub, August 2022; U.S. Army Corps of Engineers and NOAA on the Mississippi low water of 2022; Panama Canal Authority drought restrictions 2023; IEA Hydropower; U.S. Bureau of Reclamation, Lake Mead; City of Cape Town 50 litre restriction (2018); Jones et al. 2019, Science of the Total Environment (desalination); Staal et al. 2018, Nature Climate Change (Amazon forest-rainfall cascades); ICIMOD Hindu Kush Himalaya Assessment 2019; Library of Congress on the Dust Bowl migration; Williams, Cook and Smerdon 2022, Nature Climate Change (southwestern North American megadrought); Britannica on the Atacama Desert; Bear and Thomas 1964 (petrichor); NOAA National Weather Service on flash floods. The scenario itself is a thought experiment. Footage and photos: Wikimedia Commons, public domain and CC0 only; graphics by Hour Zero. AI disclosure: the narration is AI-assisted.