What Would It Actually Take to Move ALL of Humanity Off Earth?

Hey guys! We’re now live on Spotify🎧 Listen here: https://open.spotify.com/show/033fToV... Eight billion people, four new lives every second, and a planet that has never once been without us. Tonight, we measure what it would truly take to move all of humanity off the Earth: the rockets, the ribbons rising from the equator, the homes shaped from asteroids, and the seeds we would carry with us. Then we stay on the planet left behind, as the lights go out and the forests begin to return. When the last person finally leaves, what will the empty Earth still remember of us? CHAPTERS 0:00 Introduction 1:35 Everyone on Earth, Counted 15:33 The Rocket Exodus Arithmetic 29:12 Ladders to the Sky 43:00 Homes Waiting Above the Earth 57:04 What Travels With Us 1:10:51 The Long, Slow Departure 1:24:30 The First Quiet Years 1:37:59 What Grows Back on Earth 1:51:38 The Long Memory of the Ground 2:05:20 The Solar System Without Us SOURCES World Population Prospects (United Nations) — https://population.un.org/wpp/ How many people die and how many are born each year? (Our World in Data) — https://ourworldindata.org/births-and... Space Settlements: A Design Study (NASA SP-413) — https://nss.org/settlement/nasa/75Sum... ESA Space Environment Report 2025 (ESA) — https://www.esa.int/Space_Safety/ESA_... The biomass distribution on Earth (PNAS) — https://authors.library.caltech.edu/r... If emissions of greenhouse gases were stopped, would the climate return? (Royal Society) — https://royalsociety.org/news-resourc... The Silurian Hypothesis (NASA GISS, International Journal of Astrobiology) — https://www.giss.nasa.gov/pubs/abs/sc... Animals thrive at Chernobyl (Nature) — https://www.nature.com/articles/526166a LAGEOS-I and LAGEOS-II (eoPortal) — https://www.eoportal.org/satellite-mi... New LROC images offer sharper views of Apollo 12, 14, 17 sites (Arizona State University) — https://news.asu.edu/content/new-lroc... Latest Seed Vault opening in Svalbard (Svalbard Global Seed Vault) — https://www.seedvault.no/2025/10/22/c... Are space elevators possible? (Phys.org) — https://phys.org/news/2024-02-space-e... The long-term future of the Voyager Golden Records (Space.com) — https://space.com/predicting-voyager-... #EarthWithoutHumans #LeavingEarth