Allen’s Rule is the scientific principle that endothermic animals in colder climates possess shorter limbs and bodily appendages (ears, tails) compared to counterparts in warmer climates. Southern opossums are not the same as northerners.

Did you know that opossums vary in color depending on their latitude. I have a data analysis for that with scatterplots! www.biologycorner.com/2018/03/28/d...

My students are so creative... 🫤

Lmao the bubble is fit to burst, boys This is a hysterical and insane choice, I hope they follow through!

COVID Vaccine May Hold Clues To A Universal Cancer Shot It began as an observation buried in hospital records: cancer patients who got a COVID-19 mRNA vaccine near the start of their immunotherapy lived longer. Much longer. What sounded like coincidence now looks like a breakthrough that could…

She uses the bristled end of a deck brush on her back and hindquarters, using repeated place-and-pull motions. For more sensitive areas such as the belly flap, udder, and anal region, she switches to the stick end, using careful, repeated poke-and-lift movements. See video link: youtu.be/bAk4PFEuWKQ

There was a time that our school had sketchy internet, I always had paper backup plans. I don't now, but this makes me think I should...

This is such a cool illustration of how the Mercator map distorts the size of Greenland, which looks as big as the whole continent of Africa on that map but is actually the size of Mexico.

Terrific syllabus language about the dangers of Generative AI

HHMI has a great data lesson on lizards in the cold! www.biointeractive.org/classroom-re...

This makes me want to reevaluate my life goals.

How I am walking out of 2025

I didn't know I needed this today!

Diphtheria bacteria produce a toxin that kills cells lining the throat. Dead tissue forms a thick gray membrane that sticks to the throat and tonsils, narrowing the airway and making breathing difficult. It has a mortality rate of 20% in children. The TDap vaccine saved many lives!

This is my low tech watering system for winter break. Plastic water bottles with felt tabs. The water in the bottles will nourish my plants for days!

Rabies is caused by a virus that targets the nervous system. The symptoms and death from this pathogen are gruesome. I get that we don't routinely screen organs for this virus, but the man DIED of the virus. Why would they use his organs!

I need to know where I can purchase one of these. It will go great with my cursed centipede.

Introduce yourself with 5 animals you’ve seen in the wild: *Floating the Current River in Missouri (over many years) Blue heron Common water snake Black bear Soft-shelled turtle Five-lined skink

Finished this book and wrote a short case study for my students based on the history of the Canary Girls. These women worked with TNT during the war and suffered side effects from the chemical. Great story about history and chemistry!

I've found this also works with aging parents. Like when Mom gets new hearing aids and struggles to position them in the ears. Struggle = learning.

Just convinced my mom to get hearing aids. I noticed in my grandmother, the loss of hearing meant greater isolation. People would assume she was losing her mental faculties when half the time she just didn't know what people were saying to her.

Rogue Scientist Has Own Scientific Method https://theonion.com/rogue-scientist-has-own-scientific-method-1819568501/

The science of tree ring analysis is called dendrochronology. This tree was recently cut in the park near me. How old do you think it is?

Hellbenders are sometimes called “snot otters,” “devil dogs,” or “lasagna lizards” because of their wrinkly, folded skin. Those skin folds aren’t just for looks, they increase surface area for breathing, since hellbenders absorb oxygen through their skin.

Long ago, Survivor tribes could decide their own tribe name. This caused a scandal. I think of that when loading #Kahoot and deciding whether to let students choose their own names.

Coco, Destroyer of Worlds, recuperates from surgery. Nylabone is for chewing, not eating!

The Ig Nobel is incredible , one year an Indian guy won it for calculating the average surface area of an elephant and during his acceptance they had an elephant hold up a sign with the surface area of the scientist on it, they do showbiz better than the Oscars

Took me a minute to figure out why my students were fighting over this book.

Do you love bad puns and axolotls? news.mongabay.com/custom-story...

I resurrected a vintage Furby. Should I be concerned that it is now talking to Alexa?

As I'm watching Alien Earth, I feel like these employees need more alien pathogen training.

What's bubbly and fun in the science lab? Hydrogen peroxide and liver! Here's my newly revised enzyme lab for freshmen. www.biologycorner.com/2025/09/07/l...

Getting close to Spooky Season, so I love watching the old horror movies and imagining mash-ups. Today, I present "Prom-zies." This is where Prom Night meets Night of the Living Dead.

🧪🌿🌎

There's a lot of things that can happen in a classroom that you are not prepared for. Today, a loud BOOM occurred. The students looked around, listened silently, then went back to work. Turns out, a house exploded 20 miles away!

No to AI, yes to brain cleavage #susieesse #braincomic #artist

I think I saw this horror movie.

My latest cartoon for @newscientist.com

Did you know that transplanted stem cells could be a potential cure for type 1 diabetes? The sample size is small, but it is hopeful!

My class schedule is out, almost a week before school starts! I have a freshman bio class this year, so time to revamp my resources! www.biologycorner.com/bio1/index.h...

New fear unlocked.

Most people don't know what the Department of Education does. Many of those people are about to find out when their schools lose funding, and their children lose services.

New case study, thanks to the idea from @pookleblinky.bsky.social . Explore how a viral gene became part of human DNA, and is essential for building the placenta. This same gene may play a role in multiple sclerosis.

ROYGBV!

I think I just found my next case study topic!

I will only accept food from orcas that are wearing salmon hats.

Stop scrolling, weary traveler, and rest for a moment

📚 Teach measles, immune response & vaccines through storytelling! - "Why Measles Is More Dangerous Than You Think" is a ready-to-use case study with questions, writing prompt & rubric. Perfect for bio or health 🔬💉

New case study on the evolution of crickets in Hawaii. Some have a mutation that prevents them from making songs, which helps them avoid predators. But, the songs also are used to attract mates...

A new case study about achromatopsia focuses on evolutionary concepts like genetic drift and population bottleneck.