You must log in or register to comment.

1guywhosaysthe t1_j9exytj wrote

Cube wombat beds in lava cooling cracks dynamics, got it.


Maki1411 t1_j9eyvn4 wrote

“Fascinating feacal facts”


Wooden_Suit_6679 t1_j9fcsuj wrote

*Like and subscribe for more


Live-Neighborhood857 t1_j9g48fj wrote

Alright fecal folks, back at it again with more fecal facts! Pop a squat and open your brain mouths bwcause im going to drop a log of knowledge on you.


marketrent OP t1_j9ez2kg wrote

Findings in title derived from the linked summary,^1 with reference to the hyperlinked peer-reviewed article.^2

From the linked summary^1 by Zoe Kean:

>Mammal life is diverse, and so are the poos mammals produce.

>"We understood how [the process] produced the corners that give them the square shape in cross-section," Dr Scott Carver told ABC Hobart's Helen Shield.

>"But not why they fragmented at such regular intervals along the length and came out as perfectly consistent little poos that are about the same length."

>Turning to volcano science and physics to uncover the answer, the researchers have not only discovered why wombats have "perfectly consistent little poos", but also what determines the shape of mammal poo in general.

>It was the cooling process of lava beds that inspired Dr Carver and his collaborators.

>After an eruption, lava beds cool and can solidify into specific and regular shapes.

>Dr Carver believes this research may one day help medical scientists.

>"Colorectal cancer, stress and various other things can influence the kind of faeces that people produce," he said.

From the hyperlinked article:^2

>Inspirational to our work is the formation of hexagonal columnar jointings in cooling lava beds, in which the width L of the hexagon scales as L ∼ J^−1 where J is the heat flux from the bed.

>Across 22 species of mammals, we report a transition from cylindrical to pellet feces if fecal water content drops below 0.65.

>Using a mathematical model that accounts for water intake rate and intestinal dimensions, we show pellet feces length L scales as L ∼ J^−2.08 where J is the flux of water absorbed by the intestines.

>We build a mimic of the mammalian intestine using a corn starch cake drying in an open trough, finding that corn starch pellet length scales with water flux.^−0.46

^1 Cubed wombat poo puzzle completed by researchers with the help of physics, volcanic science, Zoe Kean for ABC Radio Hobart, 21 Feb. 2023,

^2 Magondu, B. et al. (2023) Drying dynamics of pellet feces. Soft Matter 19 723-732.


Maki1411 t1_j9eybkc wrote

So in other words, poop brownies?


jadw87 t1_j9gttkl wrote

Yep...and because volcanoes !


AutoModerator t1_j9exbux wrote

Welcome to r/science! This is a heavily moderated subreddit in order to keep the discussion on science. However, we recognize that many people want to discuss how they feel the research relates to their own personal lives, so to give people a space to do that, personal anecdotes are allowed as responses to this comment. Any anecdotal comments elsewhere in the discussion will be removed and our normal comment rules apply to all other comments.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.


Hexxodus t1_j9flita wrote

I always wondered about if maybe they just had rectangular shaped intestines but now I know I guess.


Select_Teaching5668 t1_j9nyo03 wrote

It’s the one poo that my dog doesn’t eat and now I know why, too dry, kangaroo poo is far more moist!