What's Earth's dominant species by mass?

(signoregalilei.com)

92 points | by surprisetalk 9 hours ago

15 comments

  • niccl 53 minutes ago
    In some book by P G Wodehouse (inventor of Jeeves the butler), one character says (out of nowhere) that all the humans on the planet could fit in a cubic hole 1/2 mile on each side. It took me a little while to convince myself that was true. It still is, apparently
    • santadays 3 minutes ago
      And we use one cubic mile of oil every year.
      • divan 30 minutes ago
        There was a great post on this subject by Tim Urban: https://waitbutwhy.com/2015/03/7-3-billion-people-one-buildi...
        • GMoromisato 15 minutes ago
          Nightmare fuel for the next Terminator or Matrix sequel.
          • schnevets 44 minutes ago
            I usually say if every human being on the planet were placed in Texas, it would be less dense than Paris as an argument against an area being "too crowded", but this is an even more jarring comparison.
            • DennisP 26 minutes ago
              Take food production into account and the planet looks a little more crowded.
          • ortusdux 1 hour ago
            Facts I try not to think about:

            - More than 2/3rds of the world's avian biomass is poultry

            - There are more Panda Expresses than pandas (edit - in the wild)

            • stult 19 minutes ago
              I didn't know they had Panda Expresses in the wild
              • sidewndr46 1 hour ago
                Aren't there more just about any retail store than pandas?
                • ortusdux 35 minutes ago
                  Actually it looks like I had the numbers wrong. There are about 1800 wild pandas and 750 in captivity, while there are about 2200 panda express locations. I think the original fact was "more panda expresses than wild pandas".

                  It looks like 39 restaurant chains have more than 2550 locations - https://en.wikipedia.org/wiki/List_of_the_largest_fast_food_...

                  • hex4def6 50 minutes ago
                    Looks like there's about 2,500 pandas in the world.

                    https://www.franchisetimes.com/top-400-2026/

                    Pandas could fit in the top 20, beating out Panera bread (2,225).

                    • anukin 52 minutes ago
                      How does

                      “There are more jiffy’s lubes than pandas in the world “

                      sound?

                      • komodo99 50 minutes ago
                        Slippery.

                        Now I want to give a panda a slip-n-slide and film it.

                  • NDlurker 13 minutes ago
                    What would .2 billion tons of viruses look like? Or any large mass of viruses? Goopy? What color what it be? These are probably questions for an LLM
                    • WillAdams 12 minutes ago
                      That was actually covered by Randall Munro of XKCD:

                      https://what-if.xkcd.com/80/

                      • jrapdx3 0 minutes ago
                        Excellently written, informative, entertaining and a bit scary. Oceans of slime yet viruses are so small. It is mind-blowing to think about.
                        • NDlurker 7 minutes ago
                          Haha of course it was! Thanks for the link.
                      • TZubiri 2 minutes ago
                        Should the wood of trees be counted? Its effectively dead cells of the plant, it'd be like counting the skin that we shed and sweep off the floor every weekend.

                        The trees are cheating

                        • gumby 1 hour ago
                          Famously, when asked about a god, J.B.S. Haldane allegedly said that if there is a god or gods, they must have an “inordinate fondness for beetles.”
                          • 0cf8612b2e1e 17 minutes ago
                            There is a Discworld joke about this. After being introduced to the God of evolution, God shows off the magnum opus he has been developing, the cockroach.
                            • adammarples 1 hour ago
                              This is because when they would lay a sheet on the ground and shake the branches of a tree, they would often find more species of beetles than anything else. However, they may have been extrapolating a bit far from the few places they tried this.
                            • imzadi 1 hour ago
                              I feel like it might be bamboo, but they sort of skipped over grasses
                              • yorwba 50 minutes ago
                                Grasses mentioned in the article: rice, wheat, maize and sugar cane. I think all of them likely beat the bamboos because there are too many different bamboo species, not a single dominant one.
                                • shevy-java 40 minutes ago
                                  That's not necessarily grasses though. Rice is a Poaceae, https://en.wikipedia.org/wiki/Poaceae, so these are covered by the grass family - but grasses would be the non-eatable variants in the wild. See Wikipedia:

                                  https://en.wikipedia.org/wiki/Grass

                                  "The three major families of grasslike plants are true grasses (Poaceae), sedges (Cyperaceae), and rushes (Juncaceae)."

                                  So he at best only did the family Poacaea but where are the wild poaceae in his calculations?

                                  Tons of things are missing in that article.

                              • gkoenig 8 hours ago
                                It was fun and gave human written. Thanks for that!
                                • elevation 1 hour ago
                                  English words like "goodbye" are contracted from longer expressions after centuries of common use[0]. Reading your phrase "gave human written" made me wonder how this phrase would contract if it were still in use centuries from today.

                                  [0]: https://www.youtube.com/shorts/t2ew2UHaCuY

                                  • apsurd 1 hour ago
                                    funny that i didn’t think about it till i read your comment. and then realized i read the entire thing. checks out.

                                    on the other hand i don’t think I’m physically capable of reading the AI landing pages of every new product on HN.

                                  • vlyan 58 minutes ago
                                    >There are thousands of species of ants and termites, and just one species of human.

                                    that's rather debatable. unless, of course, you're an adherent of creationism.

                                    • pfdietz 55 minutes ago
                                      It's talking about species that currently exist. As far as we know there is only one currently existing species in the genus Homo.
                                    • shevy-java 42 minutes ago
                                      He did not calculate the weight of bacteria, archaea, viruses?

                                      I understand that they each individually are small, but they are literally everywhere - and include carbon too.

                                      • a3w 1 hour ago
                                        How come algae did not make the list?
                                        • nubinetwork 2 hours ago
                                          Was surprised not to see whales on the list
                                        • andai 1 hour ago
                                          Obligatory xkcd has a nice visualization of the land mammals by mass:

                                          https://xkcd.com/1338/

                                          • dhosek 39 minutes ago
                                            It’s nice to see he separated the sheep and the goats.
                                          • liquid-monthly 4 hours ago
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                                            • lukeify 1 hour ago
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                                              • imzadi 1 hour ago
                                                Plastic is a species?
                                                • dhosek 38 minutes ago
                                                  Ever hear of the Nestene consciousness and the autons?
                                              • JoeAltmaier 7 hours ago
                                                Anaerobic bacteria in rock underground. Because they inhabit cubic volume, not 2D surfaces, there can be no comparison.
                                                • xboxnolifes 1 hour ago
                                                  I'm not sure what cubic volume vs 2D surfaces means to you, but these comparisons are by mass, not volume. Plus, anaerobic bacteria would only come up on top if you counted all of them as one species, which they are not.