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If there were only 100 animals on Earth...

Here is what the Earth would look like if there were only 100 animals living on it.

For this video, we based ourselves on a scientific study published in the journal PNAS in 2018. The study estimates the total biomass on Earth, meaning the mass of life on Earth, as well as the distribution of this mass according to different groups of species (plants, animals, fungi…). The masses of the different groups were estimated from their carbon mass. Source 1 Source 2

We first focused on animals. We calculated the percentage of each group based on their total mass. For greater readability, these percentages were rounded to the nearest unit (except when the data justified a precise value). We also decided to present these percentage as the number of individuals (out of a total of 100 animals of equal mass).

Finally, we calculated the distribution of total biomass by adding non-animal groups such as plants or bacteria.

09/03/2019 4:01 PMupdated: 09/04/2019 3:15 PM

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30 comments

  • Sugeng
    01/01/2020 00:04

    Good information

  • Jose R.
    12/31/2019 20:18

    Cuidemos nuestro planeta

  • Sushmita V.
    12/31/2019 15:57

    thanks for imformations

  • Arie R.
    12/31/2019 11:39

    Diantara seratus ,satu yang terbaik

  • Celso D.
    12/30/2019 18:07

    Dejen de mentir. Todas mentiras e inventos.. creen que son dioses.... crotosssss

  • Jales M.
    12/29/2019 19:58

    🤔🤗

  • Renard D.
    12/29/2019 13:19

    Méduse

  • Antonia R.
    12/28/2019 19:41

    Grazie😍interessantissimo

  • Rehan R.
    12/28/2019 14:28

    Paulyna Al Said and

  • José D.
    12/27/2019 15:04

    Muchos seres humanos son destructores

  • Waltraud W.
    12/26/2019 10:57

    Give it time.we are getting there

  • Leah M.
    12/26/2019 10:27

    Challenging students emptu book

  • Clemen M.
    12/26/2019 04:14

    wow

  • Luis R.
    12/25/2019 23:09

    what if there are only 100 animals on earth and 99 of them are goldfish and one chicken

  • PaRo G.
    12/25/2019 17:10

    Thanx 🙏🏼 Please notice, When we correctly say that in a certain moment there are just double FARMED ANIMALS than their Human "producers", we may fail to visualize how many these victims of our hunger actually came to be ! Their individual position may be romantically perceived as a pair of generous meat pets for each of us, but they are so quickly butchered, completely substituted, well how many times each year ? Once a month ? Quite scaring responsibility, since our sacri-fices aren't looking so pious at all

  • Christopher A.
    12/25/2019 14:18

    Great information bye

  • Graham K.
    12/25/2019 13:39

    This may yet happen....or something similar....

  • Ne R.
    12/25/2019 13:23

    huh!not that percentage anymore w/sprays&marky waters...

  • Alkiviadis M.
    12/25/2019 11:35

    How can they forget the plantae ;;;;;;;;;;;;;;;;;;;;;;;;;;

  • Carla R.
    12/25/2019 10:52

    Certainly an eye opener.. very intriguing

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