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thosesunnydays:

toni-tan:

taylorthelatteboy:

Just a pool, disguised as a pond, with a trampoline instead of a diving board

Holy fuck! I wrote a paper about these kinds of pools several years ago for a class when they were just prototypes. These pools have a natural filtration system that run based on the plants that are in the pool that give the water nutrients that allow it to not only be crystal clear, but you are also able to drink the water because it becomes so clean. And the best part is that once the initial filtration system is installed and calibrated, it maintains itself and eliminates the need for chlorine or constant maintenance like salt water pools. 

I want one

^ thank you to everyone who kept that wonderful science-reasoned comment on this pool.

(Source: wikingvinning)

biomedicalephemera:

Our Three (Brain) Mothers

Protecting our brain and central nervous system are the meninges, derived from the Greek term for “membrane”. You may have heard of meningitis - this is when the innermost layer of the meninges swells, often due to infection, and can cause nerve or brain damage, and sometimes death.

There are three meningeal layers: the dura mater, arachnoid mater, and pia mater. In Latin, “mater” means “mother”. The term comes from the enveloping nature of these membranes, but we later learned how apt it was, because of how protective and essential the meningeal layers are.

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  • The dura mater is the outermost and toughest membrane. Its name means “tough mother”.

The dura is most important for keeping cerebrospinal fluid where it belongs, and for allowing the safe transport of blood to and from the brain. This layer is also water-tight - if it weren’t, our cerebrospinal fluid (CSF) would leak out, and our central nervous system would have no cushion! Its leathery qualities mean that even when the skull is broken, more often than not, the dura (and the brain it encases) is not punctured.

  • The arachnoid mater is the middle membrane. Its name means "spider-like mother", because of its web-like nature.

The arachnoid is attached directly to the deep side of the dura, and has small protrusions into the sinuses within the dura, which allows for CSF to return to the bloodstream and not become stagnant. It also has very fine, web-like projections downward, which attach to the pia mater. However, it doesn’t contact the pia mater in the same way as the dura: the CSF flows between the two meningeal layers, in the subarachnoid space. The major superficial blood vessels are on top of the arachnoid, and below the dura.

  • Pia mater is the innermost membrane, which follows the folds (sulci) of the brain and spinal cord most closely. Its name means “tender mother”.

The pia is what makes sure the CSF stays between the meninges, and doesn’t just get absorbed into the brain or spinal cord. It also allows for new CSF from the ventricles to be shunted into the subarachnoid space, and provides pathways for blood vessels to nourish the brain. While the pia mater is very thin, it is water-tight, just like the dura mater. The pia is also the primary blood-brain barrier, making sure that no plasma proteins or organic molecules penetrate into the CSF. 

Because of this barrier, medications which need to reach the brain or meninges must be administered directly into the CSF.

Images:
Anatomy: Practical and Surgical. Henry Gray, 1909.

super-highschool-level-homestuck:

iprayforangels:

plushestrumpest:

30secondstocalifornia:

wingscanspeak:

zorobro:

wingscannotspeak:

peetasboxers:

kissyourneck-slitmythroat:

I showed this post to my boyfriend and he tried to take his shirt off like a girl and 

uh

yeah

Out of the 82k notes my post got this is by far the best comment holy shit thank u for being u

So i tried it both ways and uh

i mean how do you do the first one without pulling out all your hair?

this made me laugh really hard….

and it made me realize that girls and boys pull their shirt off differently. /amazed

but seriously I think girls just do the cross arm thing because of HAIR like demonstrated 

So one year, one URL change, and a hair cut later, I decide to try again… FOR SCIENCE! 

Its not science unless you write it down so 

First method:

image
Well done, i guess…

Second:

image
I fucked up

Girls… how?

I DON’T UNDERSTAND HOW WE CAN HAVE SUCH DIFFERENT WAYS OF TAKING OFF SHIRTS AND SO MUCH DIFFICULTY DOING IT THE OTHER WAY

I FIGURED IT OUT!!!!!

It’s all in the way that girl/boys shirts are made.

Girls shirts have less armpit room then boy’s do and are generally shorter so pulling it off over your head is more practical because by lifting your arms all the way up you make enough room for the sleeves to just slip off.

Boys shirts have more room and are generally longer so it is easy to slip them off over your head.

but if you take a girls shirt off like a boys shirt you will get your arms caught because there isn’t much armpit space.

and if you take a boys shirt off like a girls shit you will still have your head in it when you’ve lifted your arms all the way up because of the shirt’s length.

It has nothing to do with us. It is entirely to do with how our shirts are made. I figured it out for you. YOU’RE WELCOME!

bless you

(Source: princessveroni)

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