Based on my admittedly still very much undergraduate understanding of biology, it seems like we're heading toward a problem we may not be able to put back in the box.

I'll summarize my understanding equally crudely (please correct where I am wrong): Developing the first self-replicating mirror bacterium will be extraordinarily difficult. But developing the second, the thousandth, or the ten-thousandth might become trivial by comparison.

If a mirror organism can exploit sufficiently abundant environmental resources, while avoiding many of the immune defenses, predators, and biological constraints that regulate conventional organisms, wouldn't it potentially have an enormous competitive advantage?

Now introduce AI. If increasingly capable systems dramatically reduce the expertise and resources needed for biological engineering, what prevents this technology from eventually becoming accessible to individuals with very little oversight?

I understand much of this is speculative, but I don't think we're stacking an unreasonable number of speculative assumptions here.

So here's my actual question: What biological barriers would prevent mirror life from becoming a catastrophic invasive species, and how confident are we that those barriers would remain effective?

And, perhaps more importantly, if the first mirror organism requires a massive research effort but subsequent organisms become much easier to produce or propagate, what prevents a sufficiently motivated, reckless, or malicious individual from eventually creating one?

To bring it back to title: Why can't a precocious and dark teenager or some kind of weirdo religious fanatic in the not-too-distant future make this happen trivially?

Bonus: What made me think of this was a question (besides obvious 2026 Nobel in chemistry) I can't answer, "Why isn't there a competing other handed biome on Earth?" - so if you have an idea on that, take it away.

Можетли человек стать гермофродитом(это просто для забавы)

Например если у человека например у женщини будет половой орган мужины полнистю функциональной и в тоже время тоже функцияналный женский орган и на оборот то будет ли это читатся гермафродитом? можете объяснить те кто шарят за биологию я ешё школьник и мне это интересно.

Hi! I had to leave the nursing field due to getting sick back in 2024. I am getting ready to go back to school now, but will not be able to work outside of the home full time. I took microbiology so many times, along with biotechnology and of course biology classes. I really love biology.

Is it worth it for me to get a bachelor’s in biology? Or due to me having to work from home, at least most of the time, will I not be able to find any success with this degree?

I live in the US!

Hello everyone! I have a college group project I am working on right now where our group designs a hypothetical animal based on fictional planet conditions, and I am running into some issues.

Fitting all the body systems together has been a bit of an issue, because I seem to find a new contradiction every time I settle on something.

Right now I am really stuck on the circulatory system especially. We decided that due to the high UV radiation of our planet and varying extreme temperatures, we will have to have an endoskeleton instead of an exoskeleton so we can have an endotherm.

Originally I was going to settle on an open circulatory system for the benefit of low pressure since our planet has lower pressure too, but I realize now that that is unlikely to support an endoskeleton if I am not mistaken. So now I am looking at closed circulatory system possibilities, but I need to figure out a way to HAVE a closed one without it being too high-pressure. I am currently looking into the concepts of accessory hearts or heart-like structures to disperse pressure and maybe larger diameter vessels.

We don't plan to make the organism very big (maybe squirrel sized or smaller if need be) or super active 99% of each day-night cycle, but yeah. Below I have attached our planet description with deeper details. Any help would be appreciated:

Gravity: Small planet, low gravity, about half that of Earth. Very slow rotation. No major elevation variations or mountains on the planet.

Atmosphere: Atmosphere contains about 30% oxygen and about 2% carbon dioxide. The rest is a mixture of nitrogen and helium. The atmosphere is thin and atmospheric pressure is 20% lower than Earth.

Climate and Temperature: Days start cold but get increasingly warmer to about 50°C before cooling again.
Nights get down to about 4°C. No major seasonal differences.

Solar Radiation: Days are very long. Day/night cycles last about 340 Earth hours (rather than our 24). So one day on Alpha lasts two Earth weeks. Lots of intense sunlight, UV radiation, and heat during the daylight hours (lasting 7 Earth days). Nights (also 7 days long) are very cold due to the thin atmosphere.

Water: Due to drastic temperature differences, weather is often windy and stormy. It rains every
"morning" for 40-60 hours. Temporary ponds and lakes fill up with
freshwater in the "morning," then slowly dry during the daylight hours. Most water evaporates by nightfall. A very few large, permanent bodies of water are very salty,
supporting only halophilic bacteria. Constant erosion from
intense rainfall and runoff keeps land elevation relatively flat.

Dominant Vegetation: Dominant trees are very tall due to low gravity. Tree trunks are thick and storm-resistant. Sugar-filled roots grow very deep. Trees open their feathery leaves after heavy rains to absorb light, but curl leaves into a hard shell at night to conserve water.

Other Important Features: Due to huge and frequent rainstorms, soil is poor and heavily eroded. Lots of lightning causes frequent wildfires that kill small plants but rarely harms dominant trees. Lots of static electricity in the air. There are lots of small, fast growing plants that sprout and grow during the long day, flower, drop
seeds, and then die during the long night. There are lots of insect-like creatures. Few large animals are readily apparent, though planetary probes may have just frightened them away.

For reference ill be graduating this december with a major in marine bio and minor in environmental. I have experience working under Masters and Phd students in labs focused on enviromental work (with a focus in marine bio), two differnet labs to be exact. I also have some other work/internship experience that could maybe have some relevance. In yalls opinion, would most recruiters find this above average, or just normal. I really am trying to get a job in my field, even with a bachelors, i need a job to make money, and im not trying to go for a masters until im somewhat good on money (plus slightly burnt out). Honestly, even a job not in my field that still gives me some lab experience would be great, i live in an area with a "diverse" job market (Hampton, Va). So yea, kinda yapping but already been applying for jobs since start of the semester, yall think ima be ok, or am i just cooked.

I don’t wanna work in the educational field and i am still an undergrad what do you guys recommend me to do so i can get a laboratory/environmental job

I couldn’t find any posts or discussions about Plutonium in Man: A Twenty-Five Year Review by Patricia W. Durbin.
I’ve been extremely interested in how the human body responds to radioactive isotopes, so I wanted to learn as much about it as I could. Then I found this publication (can I even call it a book? lol) and was thrilled. I even printed out almost all of it.
I’m just a student and know very little about biology, or about pretty much everything in general, but I figured I’d try to learn directly from the source.
I’ve already read about 30–40 pages, trying to understand everything as thoroughly as possible and taking notes on some of the medical conditions mentioned, such as wasting diseases.
It’s fascinating, really. One of the things I’ve learned is that plutonium can bind to transferrin and accumulate in the liver. If the liver is severely damaged or its function is compromised, however, plutonium may accumulate more in the bones instead. There were also experiments involving dogs and other animals, particularly studies of plutonium deposition in bones, but some of the findings turned out not to translate well to humans.
There’s a lot more discussed in the publication, but these are probably the main points I’ve taken away from the first few dozen pages. I especially like how it includes patient information and precise numerical data from experiments.
Still, I feel like I need even more detailed information.
Has anyone read this publication or looked into the experiments it discusses? I’d love to hear scientific opinions, interpretations, or discussions of the findings. I’m not looking to discuss the ethics of the experiments here; I’m primarily interested in the science.

I’d also love to find more detailed reports or similar publications on this topic, especially studies of how radioactive isotopes behave in the human body, how they accumulate in different organs and tissues, and how they affect biological processes. If you know of anything similar, I’d really appreciate the recommendations!

Meet the springtail, a tiny arthropod with a built-in ejector seat. Capable of launching itself 100 times its own body length and spinning at over 22,000 RPM, this little acrobat makes Olympic gymnasts look positively sluggish.

All thanks to a spring-loaded appendage tucked beneath its body. Nature literally went above and beyond with this one!