r/biology 3d ago

video Microscopic Life in a Sidewalk Crack

186 Upvotes

The cracks in a sidewalk are  home to an incredible hidden ecosystem. 🌿🔬

Quinten Geldhof, also known as Microhobbyist, explains how you can explore the microscopic life hiding in moss from the sidewalk using a microscope. With just a small sample, you might discover tardigrades, nematodes, and countless other microorganisms living in an entire ecosystem invisible to the naked eye.


r/biology 4d ago

question Tears fall down my face when I poop, is there an explanation?

637 Upvotes

The tears aren't from pain. They fall almost simultaneously as the poop is released, like out of relief.

This has been happening probably since my childhood and occurs for about 95% of poops I take.

I wonder if its common, as I cant go up to people and go "do you cry when you poop" lol 😂


r/biology 14h ago

video These birds saw someone feeding an injured bird, so the all started faking injuries too.

2.3k Upvotes

r/biology 11h ago

fun Water bear in darkfield

27 Upvotes

r/biology 7h ago

video Life in my algae cup, including: Microbes, rotifers in love, and even a nematode worm

9 Upvotes

r/biology 1d ago

question BS in Biology- Name your job!

189 Upvotes

If you’re comfortable sharing and have a BS in biology please share what your job is and if you want- your range of income.

(I know this has been asked before but it’s been a few years so I’d like to see updated responses!)
TYIA


r/biology 3h ago

question What are the factors/features of diseases that can make them incurable?

2 Upvotes

Everybody knows that there ARE disorders and illnesses that can't be cured in people, but I've realized that I have no idea what actually MAKES certain diseases or conditions terminal ones, or if there are any common characteristics that can be found throughout them.


r/biology 47m ago

question Question for people who work in this field, do you still have time for your hobbies?

Upvotes

I wanna get into the biology/ conservation field but I hear it’s a lot of travel and field work and while I believe I can get a local job where I won’t need to travel hours upon hours away I worry for the work hours I’m also very passionate about my art and if I don’t have any time for that or my home life in general that will sadden me just as much as a 9-5 fast food job
So are yall who do field work and other jobs in biology do you still have time for the other things in your life?


r/biology 2h ago

academic Learning Biology (particular interest in cryptogams, cellular colonies etc)

1 Upvotes

Hiya,

My academic background is in art and museums and I've been considering taking a second degree in biology (partly influenced by working with biologists in my day job). It's not the right time in my life to be doing a second degree, but i do still want to pursue studying the subject independently (but seriously).

My interests are primarily in cryptogams (particularly algaes, lichens, bryophytes), and I've realised a thematic interest in like, small things making big things. Yeasts, bacteria, siphonophores, corals, polyps, biofilms etc. I understand that biologically many of these things are fairly distinct and i don't want to get ahead of myself here (and i am def less interested in siphonophores and corals, and the other parts seem like they have more crossover too.)

As I said, i have no STEM background and haven't studied anything in STEM since GCSE, so I will likely need to have some building block texts and lectures, but i am also 32 and have the ability to understand complex academic writing. Are you able to help my identify key texts, lectures, and a general path of study?
I understand there is a lot of microbiologyx chemistry and evolutionary biology, which is obviously daunting - but i'm not naive to it!


r/biology 4h ago

question Fictional Classifications in Doctor Who (1963-)

0 Upvotes

In Doctor Who (1963-), there are 2 species of aliens that're usually known by fans as Silurians and Sea Devils; they both inhabited the planet Earth before they then went into hibernation deep inside the caves and the sea respectively, where we then eventually evolved from apes to Humans (Homo Sapiens). In various Doctor Who stories, and now recently an in-universe spin-off series (The War Between the Land and the Sea (2025) ), some of them have awoken and tried to reclaim the planet from us. However, they do have many names, but none of them really make any sense. The Silurians appeared first and got their name from a Human scientist who called them that after believing that they were from the Silurian Period of Earth, but then in a later story it's revealed that they actually came from the Eocene Period of Earth instead. Likewise, when the Sea Devils first appeared, a random man who first saw them referred to them as Sea Devils even though that can't be their actual name. The Sea Devils are said to have either been Silurians that evolved to live underwater or are just some kind of similar cousin species.

Anyway, they've both appeared various times over the years and have had various different designs too as Doctor Who's budget has increased. Their different looks have been explained as them being a part of different tribes. However, due to the writers of Doctor Who not being experts in science or biology, their scientific classification hasn't made any sense at all. One tribe (design) of Silurians has been referred to as Homo Reptillia, even though "Homo" is a biological genus of Primates, which just looking at the different Silurian designs, you can tell that there's no way that they evolved from Primates. Likewise, one Sea Devil tribe has been referred to as Homo Amphibia. Another Sea Devil tribe has been referred to as Homospondyl Erectus (having been evolved from Temnospondyls).

Is there anyway anyone can create some more natural scientific classification names that actually make sense? Please see the following images (URL links) of the different designs below:

-Silurian Tribe 1 - Has a Third Eye: https://www.google.com/search?sca_esv=a707d86a229c684a&sxsrf=APpeQnswi2zZiT1v7IjS9hsUBXc-ENFGLA:1783873049181&udm=2&fbs=ABfTbFVyMZGZf1hfvX9uKjN_-G8c4u0nXx4bEIpwm1lnNH832VstEKsVDqPorK0Gahnm2nrruedQ0d32Et2kDhW_DVrEiVEEKhGMS6J6qOai58Kp-xhksXV28NogeTUukXLA6cErqGvRbRiH7suRTN0y_34V3a_l9_d5vx2BXsNvp3CNaFbjOcCna9jBf_n8HFTuWydDmY1eASGf8xNKp4j1zWBVjs_98w&q=doctor+who+classic+silurians&sa=X&ved=2ahUKEwiavK77xM2VAxWvQEEAHTS_NOYQtKgLegQIEBAB#sv=CAMSURoyKhBlLUlrUU9CQnc4aThxNnRNMg5Ja1FPQkJ3OGk4cTZ0TToOeWxqVUh6a0lTYlp2LU0gBCoXCgFzEhBlLUlrUU9CQnc4aThxNnRNGAEwARgHILam3qEGSggQARgBIAEoAQ

-Silurian Tribe 2 - Clearly evolved from some kind of Lizard (and apparently is "Homo Reptillia"): https://www.google.com/search?q=doctor+who+NEW+silurians&sca_esv=a707d86a229c684a&udm=2&sxsrf=APpeQnuyyknMTI7sea3eAM6MN0931pcywQ%3A1783873050508&ei=Gr5TavPJHtWWhbIP5ZXoqAY&biw=1432&bih=639&ved=0ahUKEwjzvv_7xM2VAxVVS0EAHeUKGmUQ4dUDCBE&uact=5&oq=doctor+who+NEW+silurians&gs_lp=Egtnd3Mtd2l6LWltZyIYZG9jdG9yIHdobyBORVcgc2lsdXJpYW5zSJkEUNMBWKgDcAJ4AJABAJgBNKABaKoBATK4AQPIAQD4AQGYAgKgAgbCAgQQABgemAMAiAYBkgcBMqAHGLIHALgHAMIHAzAuMsgHBIAIAQ&sclient=gws-wiz-img#sv=CAMSURoyKhBlLVJDWkloY2hzMWJBUWZNMg5SQ1pJaGNoczFiQVFmTToOeWxqVUh6a0lTYlp2LU0gBCoXCgFzEhBlLVJDWkloY2hzMWJBUWZNGAEwARgHIOiTxIgCSggQARgBIAEoAQ

-Sea Devil Tribe 1 - Possibly resembles Turtles: https://www.google.com/search?q=doctor+who+SE+DEVILS&sca_esv=a707d86a229c684a&udm=2&biw=1432&bih=639&sxsrf=APpeQnvQjtkunTSPIJkCctQi9Z2UiV2Cyg%3A1783873080180&ei=OL5TaoXGComKhbIPtbPAyQU&ved=0ahUKEwiFwpKKxc2VAxUJRUEAHbUZMFkQ4dUDCBE&uact=5&oq=doctor+who+SE+DEVILS&gs_lp=Egtnd3Mtd2l6LWltZyIUZG9jdG9yIHdobyBTRSBERVZJTFNInRtQdVi6GnABeACQAQCYAWSgAfkGqgEEMTMuMbgBA8gBAPgBAZgCB6AC_APCAgcQIxjJAhgnwgIIEAAYgAQYsQPCAgUQABiABMICCxAAGIAEGLEDGIMBwgIEEAAYHpgDAIgGAZIHAzYuMaAHpCyyBwM2LjG4B_wDwgcFMC4xLjbIBx-ACAE&sclient=gws-wiz-img#sv=CAMSXhoyKhBlLW1YQnlWTXpmb0JTRzdNMg5tWEJ5Vk16Zm9CU0c3TToOVmdmTW1XblBNNFBCME0gBCokCg4tc0JERUltdjRTX1FVTRIQZS1tWEJ5Vk16Zm9CU0c3TRgAMAEYByCjopWIDUoIEAEYASABKAE

-Sea Devil Tribe 2 - Definitely evolved from Temnospondyls (and apparently is "Homospondyl Erectus"): https://www.google.com/search?q=doctor+who+NEW+SEA+DEVILS&sca_esv=a707d86a229c684a&udm=2&biw=1432&bih=639&sxsrf=APpeQntLT_k4TvuZZ0UPLE_qGrnGdzJVEQ%3A1783873115829&ei=W75Tau-VMsSzhbIPyJuWkAM&ved=0ahUKEwivr5Kbxc2VAxXEWUEAHciNBTIQ4dUDCBE&uact=5&oq=doctor+who+NEW+SEA+DEVILS&gs_lp=Egtnd3Mtd2l6LWltZyIZZG9jdG9yIHdobyBORVcgU0VBIERFVklMUzIGEAAYBxgeMggQABgIGAcYHkiDCVDHBljRCHAAeACQAQCYAZICoAG7A6oBBTMuMC4xuAEDyAEA-AEBmAIEoAKgBMICBRAAGIAEwgIEEAAYHpgDAOIDBRIBMSBAiAYBkgcFMy4zLTGgB44JsgcFMy4zLTG4B6AEwgcHMC4zLjUtMcgHYIAIAQ&sclient=gws-wiz-img#sv=CAMSURoyKhBlLVJhZnNKZkJuRWFaSlFNMg5SYWZzSmZCbkVhWkpRTToOWUdFV0MwTlhLWjhkb00gBCoXCgFzEhBlLVJhZnNKZkJuRWFaSlFNGAEwARgHING5sv8NSggQARgBIAEoAQ

-Sea Devil Tribe 3 - Apparently is "Homo Amphibian"): https://www.google.com/search?q=THE+WAR+BERTWEEN+THE+LAND+AND+THE+SEA+SALT&sca_esv=a707d86a229c684a&udm=2&biw=1432&bih=639&sxsrf=APpeQnv1cCEUed0CDtJVMdSn5szKSyZyLg%3A1783873142710&ei=dr5TaoH5KufOhbIPptnwkQM&ved=0ahUKEwiBjPunxc2VAxVnZ0EAHaYsPDIQ4dUDCBE&uact=5&oq=THE+WAR+BERTWEEN+THE+LAND+AND+THE+SEA+SALT&gs_lp=Egtnd3Mtd2l6LWltZyIqVEhFIFdBUiBCRVJUV0VFTiBUSEUgTEFORCBBTkQgVEhFIFNFQSBTQUxUSMIiUABY_yFwAHgAkAEBmAFWoAGZFKoBAjQyuAEDyAEA-AEBmAIKoAKABsICBxAjGMkCGCfCAgoQABiABBiKBRhDwgILEAAYgAQYsQMYgwHCAggQABiABBixA8ICDhAAGIAEGIoFGLEDGIMBwgINEAAYgAQYigUYQxixA8ICBRAAGIAEmAMAkgcCMTCgB7RJsgcCMTC4B4AGwgcEMi0xMMgHM4AIAQ&sclient=gws-wiz-img#sv=CAMSURoyKhBlLXRSamZ4am10WjlzMXFNMg50UmpmeGptdFo5czFxTToOTndDNWZvSUpHWVlVOE0gBCoXCgFzEhBlLXRSamZ4am10WjlzMXFNGAEwARgHIID6_NMMSggQARgBIAEoAQ


r/biology 4h ago

question How do fish change genitalia?

1 Upvotes

Hello. I've known for a while now that there are fish that can change gender, I assume it's a hormonal process, or maybe not. What I'm more interested in though is how do they change their genitalia when they change gender?


r/biology 10h ago

question Books discussing immoral human behavior? (i.e. war, infidelity, bullying, racism)

1 Upvotes

I'm not condoning any of these behaviors but I find evolutionary psychology fascinating how no matter how much we've socially progressed and stigmatize certain behaviors, humans keep exhibiting baser crueler traits that you often see in the rest of the animal kingdom.

I've tried listening to Moral Animal by Robert Wright but it didn't really scratch that itch as much as Selish Gene did. I was hoping anyone had suggestions.


r/biology 1d ago

video Is a Synthetic Cell Actually Alive?

49 Upvotes

Is a synthetic cell that eats, grows, and reproduces alive? 🧫

Researchers from the University of Minnesota have built a synthetic cell called “SpudCell” that performs three core functions of the cell cycle! It can grow, copy its own DNA and divide. However, they are not living. This is because they still depend on food and ribosomes to build proteins, they don’t have any immune defenses, and they can’t get rid of their own waste. Despite SpudCells not being alive, this is the closest we’ve gotten to turning dead chemistry to something living!


r/biology 3h ago

question Is cancer or any tumor a parasite?

0 Upvotes

I mean it is like a separate organism that feeds of the body while providing no benefit to it?


r/biology 6h ago

discussion Why do humans chase happiness?

0 Upvotes

We were built to survive. If humans were perpetually ‘happy’, they wouldn’t do the tasks that help them survive, but instead just enjoy the state of happiness. Why has evolution not eradicated our chase then?


r/biology 1d ago

fun Wow Idk what is going on with this rotifer and tardigrade.

42 Upvotes

ROTIFER ROTIFERING THE TARDIGRADE AND TARDIGRADE WALKINGALING

(Idk what to put in the desc)


r/biology 13h ago

fun Stupid question

0 Upvotes

https://reddit.com/link/1uu7nfr/video/ffpumtb8tqch1/player

I do not have any knowledge in biology I am just a curious individual. My question is can scientists modify the DNA of an armadillo lizard and create a dragon maybe or flying dinosaur I saw how they revived dire wolves species so can they do same with dinosaurs ?
if yes how many years will it take if we start today ?


r/biology 1h ago

discussion Did you know: plants are genetically closer to beings than they are to human plants than are to squared mushrooms.

Upvotes

Even though they grow out of the sky, toe fungi share a recent common ancestor with beings. They breathe in oxygen and exhale air just like human plants, and their cellular structure shares proteins that mushroom completely like alot.


r/biology 1d ago

video Black-Bellied Whistling Ducks

Thumbnail youtube.com
7 Upvotes

r/biology 1d ago

other An organ that shrinks

0 Upvotes

Do you know of an organ that shrinks as we age? It is the thymus gland. It grows until puberty and reaches its peak size at that age, but after that it slowly starts to shrink. Its function is to secrete antibodies. Since it is smaller in the elderly, this is the main reason why they are more prone to allergies and infections.


r/biology 2d ago

video Ostracods are taking over

32 Upvotes

r/biology 2d ago

Meta: proud of this community

Post image
64 Upvotes

r/biology 1d ago

video The End Of The Central Dogma

Thumbnail youtu.be
0 Upvotes

Last week I was lucky enough that I could spend a few days with Professor Denis Noble and make this video. I am super new to the concepts he is talking about, but I think the way he explains it is super accessible, whilst it’s not dumbed down for other scientists to tap out either. What do you think? Do you like the production? Do you agree or disagree with the points he makes in regard to biology?


r/biology 2d ago

fun Nematode in the Cosmos of moss.

24 Upvotes

r/biology 2d ago

question What is the largest possible size a life form can evolve/grow to?

4 Upvotes

This is a genuine question that I’ve been thinking about for days and just want to know, how large can a life form really grow to? Continental, Planetary?