What If You Were the Last Person on Earth?
Your mom’s coffee is still hot and the spoon is still turning, but every person on Earth is gone except you. You get thirty days with the whole planet to yourself, and by the end you’re on a roof with a road flare, trying to get someone in space to look down.
Who was the other light? And would you have given the painting back? Tell us in the comments. Got a what-if of your own? Leave it there too. If we pick yours, you have to live it.
We ask. You find out.
– World population about 8.2 billion (UN estimate, 2025-26)
– The 2003 Northeast blackout, about 50-55 million people, the cascade took about 3 minutes: https://en.wikipedia.org/wiki/Northeast_blackout_of_2003
– Cell towers run on backup batteries for a few hours: https://ktvu.com/news/ca-lawmakers-want-phone-companies-to-provide-72-hours-of-backup-battery-power-during-outages
– A closed fridge keeps food safe about 4 hours, a full freezer about 48 hours (USDA): https://publications.extension.uconn.edu/2014/02/19/keeping-food-safe-during-a-power-outage
– Undamaged canned food is safe indefinitely if not frozen or kept hot (USDA): https://www.foodrepublic.com/1555933/how-acidity-affects-canned-foods/
– A water tower usually holds about one day of water: https://people.howstuffworks.com/water.htm
– Satellites photograph all of Earth’s land every day: https://www.smithsonianmag.com/innovation/how-daily-images-entire-earth-will-change-way-we-look-it-180962467/
– The Bonn-Oberkassel dog, about 14,000 years old: Janssens et al., Journal of Archaeological Science (2018); https://www.nationalgeographic.com/history/article/ancient-pet-puppy-oberkassel-stone-age-dog
– Radio skywave at night: https://www.todayifoundout.com/index.php/2015/01/radio-signals-travel-night-day/
– Michel Siffre’s 1962 cave stay: https://www.iflscience.com/in-1962-a-geologist-went-into-a-cave-2-months-later-hed-accidentally-invented-a-new-field-of-biology-82082
– The electric-shock study: Wilson et al., “Just think: The challenges of the disengaged mind”, Science (2014)
– The Milky Way is hidden from about 80% of North Americans: Falchi et al., Science Advances (2016); https://www.nps.gov/orgs/1207/06-10-2016.htm
– Dog gaze and oxytocin: Nagasawa et al., Science 348 (2015)
– The space station: about 400 km up, once around Earth every 90 minutes, people aboard since 2 November 2000: https://www.nationalgeographic.com/science/article/humans-have-lived-on-international-space-station-20-years-straight
#whatif #lastpersononearth #animation
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