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4.5 Billion Years in 1 Hour

Kurzgesagt – In a Nutshell · explainer · Watch on YouTube

Geology & earth scienceEvolution & geneticsCosmology & astrophysics

What it is

Kurzgesagt's hour-long animated film that compresses Earth's 4.5 billion year history into one hour, roughly a million years per second. It follows the evolution of life through to humanity's tiny final stretch.

Why Hacker News recommends it

HN commenters recommend it for the sense of perspective it gives on deep time and how brief human history is.

  • 4 people recommended it
  • 4 different months
  • 2 strong recommendations
  • first 2023, last 2025

What HN commenters said

  1. “It gives a nice perspective, and it’s a visceral reminder that the planet has been through far worse than us.”

    Earth's history in one hour, giving perspective.

    sillysaurusx, 2023-11 · Strong recommendation · in “Before-and-after images show how Greenland's glaciers have rapidly retreated”

  2. “I can't recommend this Kurzgesagt video highly enough.”

    Brilliant animation of Earth's history at 1.5 million years per second.

    gcanyon, 2024-11 · Strong recommendation · in “NASA: Mystery of Life's Handedness Deepens”

  3. “This video puts things into perspective, mapping the whole of 4.5B years of Earth history to 1 hour”

    Maps 4.5 billion years of Earth history to one hour.

    nlehuen, 2024-08 · Recommendation · in “Matching dinosaur footprints found on opposite sides of the Atlantic Ocean”

  4. “I recommend watching the Kurtzgesagt video called All of History in one hour”

    Shows humanity as a few seconds of Earth's history.

    8fingerlouie, 2025-04 · Recommendation · in “How many supernova explode every year?”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: deep time, evolution, kurzgesagt, animation, geologic timeline

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