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Documentary about the only penis musuem in the world

[Video Link] The Final Member "follows the aging curator of one of the world's only penis museum as he races against his own mortality to complete his comprehensive collection." He needs a human penis.

Bioengineer builds 50-cent paper microscope

Stanford bioengineer Manu Prakash devised a pretty amazing paper microscope that uses cheap tiny spherical lenses. The "Foldoscope" costs around 50 cents.

“I wanted to make the best possible disease-detection instrument that we could almost distribute for free,” Prakash says. “What came out of this project is what we call use-and-throw microscopy.”

"Stanford bioengineer develops a 50-cent paper microscope"

Sponges sneeze

In Evolutionary origins of sensation in metazoans: functional evidence for a new sensory organ in sponges, Danielle A Ludeman and her team at the University of Alberta document the heretofore unsuspected phenomenon of sneezing in freshwater sponges. When these sponges are stimulated with damaging sediment, they close their chimneys and inflate themselves to bursting, then abruptly "sneeze" out the irritants -- a process that unfolds very slowly (documented above in timelapse). I found out about this thanks to a fascinating interview (MP3) with the researcher on CBC Radio's As It Happens.

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A biological mechanism for fire-breathing dragons

Say dragons did exist. In that alternate universe, how would they breathe fire? (Where the answer is not "magic".) Kyle Hill has a nice explanation for how real-life fire breath might work, and how it could have evolved over time. (Although, slight spoiler, Hill's idea won't be terribly surprising to those of us raised on Ken Hamm Creationism videos.) Maggie 14

Sperm Journey

An educational video for you, from Japan. [Video Link. Thanks, Heather!]

Why do dog farts stink so bad?

Because puppies are filled with love ... and also hydrogen sulfide. Maggie 15

Your brain is all squishy: An anatomical demonstration

This video was made by the University of Utah Brain Institute to teach medical students about what a brain looks and feels like before it gets preserved in formalin and takes on the texture of a hard rubber ball.

The big takeaway message: Your brain is seriously squishy. So squishy, in fact, that a finger can dent it. As professor Suzanne Stensaas explains, this is one of the reasons why cerebrospinal fluid is so important. Your brain has to float in that fluid. If it didn't, it would come to rest against the side of your hard skull and quickly end up deformed.

Seriously, this is a fascinating (if extremely graphic) video. (Hilariously, given that fact, it opens with an image of a student eating.) Definitely worth watching!

Tongues aren't just for smelling

After you spent all that time in grade school conditioning yourself to know that snakes stick out their tongues in order to smell things, it turns out that those tricksy animals were also tasting with their tongues, all along. Maggie 5

How to: Sex your crocodile

Can you properly distinguish between a male and female crocodile? This research paper, published in 2007, will help — pointing out the sometimes subtle differences between external genitalia. It's chock full of pictures of erect crocodile penises, so you'll learn what those look like, but what particularly interested me was the diagram above.

Cloacas are sort of multi-purpose orifices found in certain species of birds and reptiles. Instead of having separate biological tools for poop, pee, and sex, these animals manage all three functions with the same hole. Males also have cloacas and will either have a penis or pseudo-penis that comes out of it for mating. I've known this for a long time, but had a lot of trouble picturing how all of that anatomy fits together. This diagram (Figure 4 in the paper) is the first image that made the internal structure of cloacas really make sense to me. The more you know!

Real lemmings don't commit mass suicide

Earlier this week, Republican representative Devin Nunes referred to his colleagues in the US House of Representatives as "lemmings with suicide vests". I would like to propose that this characterization is vastly unfair. To the lemmings.

That's because real lemmings, such as the adorable little creature pictured above, aren't actually suicidal. If anything, their problem is that they're just too damn horny. [Insert new political analogy here.]

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Popular Science answers your TMI questions

Fun fact you might not be aware of if you are not the owner of a uterus: Periods go hand-in-hand with pooping. Not every person who gets a period will end up with diarrhea, but it's not uncommon because the same hormone that makes a uterus contract (a necessary step in the whole period process) can also end up making your intestines contract. Francie Diep explains this effect — as well as the other hormone-related reason why periods and poops can be linked. Maggie 12

Two good reasons to question the claim that alien life has been found in Earth's atmosphere

First, neither the authors of the paper, nor the journal its published in, have the best track record for careful work, well-documented research, or non-hyperbolic results. More important, the actual paper, itself, makes claims it can't back up. Case in point, says Phil Plait, the alien in question is a particle the authors assume is part of a diatom — a single-celled plant. The paper actually says "assume", and, from the sounds of things, they haven't even checked out that basic, important idea with a diatom expert. Maggie 13

Lady squid dress in drag

The opalescent inshore squid (which, if you've eaten squid in the US, then you've probably eaten before) can change color just like octopuses can. In fact, scientists found that female squid can give themselves a white stripe that looks an awful lot like the testicles of their male counterparts. It's probably some kind of defensive measure, but the scientists are more interested in how the squid change color, not why. That's because the mechanism is unique, and fascinating. Maggie 4

Enormous timescales made graspable by graphs

Wait But Why has a fantastic series of graphs that aim to help us wrap our heads around the enormous timescales on which forces like history, biology, geography and astronomy operate. By carefully building up graphs that show the relationship between longer and longer timescales, the series provides a moment's worth of emotional understanding of the otherwise incomprehensible.

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Insect with gears on its legs

Meet Issus coleoptratus, an insect whose larva have interlocking meshed gears connecting their back legs. The gears help coordinate leg movements, helping the larva to jump fast and far.

Video Link