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Ant colonies flow like fluid to build tall towers

To cross streams or secure themselves against water currents, fire ants join forces to form rafts or build towers. Researchers have now worked out how the ants sustain tall structures without crushing their friends: they constantly circulate around the tower, behaving like a fluid.

Fire ants (Solenopsis invicta) have sticky pads on their feet that help them to assemble collectively into shapes.

Researchers had already worked out the secrets of fire ants’ raft-building techniques: the ants adhere to each other with their feet and orient themselves to create pockets of air, distributing their weight to form a buoyant structure. So a team co-led by Craig Tovey, a modelling mathematician at the Georgia Institute of Technology in Atlanta, sought to find out how the insects sculpt themselves into towers.

In a laboratory, the team used high-speed cameras to record how the insects assemble around a slippery Teflon rod, and tagged half the colony with a radioactive tracer to see how the insects moved inside the tower structure.

The ants use trial and error to form a tower, continuously rebuilding weaker parts that collapse until the structure is sound. Each individual insect can support up to three other ants, the researchers found. And when an ant is overloaded, it lets go of its neighbours and sinks down the column until it emerges outside the base of the tower.

The result is a dynamic, bell-shaped structure that moves similarly to a fluid, and in which each ant carries an equal load. “The ants are circulating like a water fountain, in reverse,” says Tovey. The work is published in Royal Society Open Science1.

anonymous asked:

OMG 32/Hartwin please!!

32. “I think I’m in love with you and I’m terrified.”

pairing, number, drabbles

“I think I’m in love with you.” Eggsy whispers the confession while he trails his hand down Harry’s bare chest. His eyes find Harry’s face. “And I’m terrified.”

Harry, fast asleep, doesn’t respond.

Eggsy watches him for a long time, the gentle rise and fall of his chest, the slight parting of his lips as he murmurs something unintelligible. It doesn’t seem possible that Eggsy should be allowed in his life, let alone his bed. He knows deep down that he’s only a placeholder.

They were never meant to be permanent. Desperation had forced them together, and eventually reality would tear them apart.

Eggsy could end it any time, he knows that. All he has to do is get up and walk out right now. Harry would get the message.

It would be better for the both of them if Eggsy did. He could move on with his own life, find someone he actually had a chance of keeping, maybe even settle down. Harry’s life was too nebulous for that.

A spy. A fucking spy.

Eggsy flops back down to the mattress, staring up at the ceiling. In all honesty, he should have known something was up the moment they met. Men dressed in three-pieces and sporting watches that cost more than Eggsy’s flat didn’t just find people like Eggsy interesting.

But Harry had come swaggering up to him like it was commonplace, chatted him up, made a habit of fucking him whenever he was ‘in the neighborhood.’ Eggsy should have known. His neighborhood was not one Harry would be in without ulterior motive.

In all honesty, Eggsy couldn’t even be mad. Harry had used him, yes, but only to bring down Dean Baker. It might have been nothing more than a side effect of a bigger mission, but Eggsy and his family were finally free of him.

Eggsy wasn’t a complete idiot, at least. He knew he hadn’t been supposed to find out about what Harry really did, but there were things a man let slip in the throes of passion. Puzzle pieces that Eggsy had only been able to assemble after months.

The pain of betrayal had come as a surprise to Eggsy. When had his feelings for Harry become something real? With a groan of self-loathing, Eggsy levers himself into a sitting position.

At his movement, Harry wakes. “Eggsy?” he asks, voice rough with sleep, and Eggsy wishes he didn’t want to wake up next to that again and again. “Is something wrong?”

More than you know, bruv, Eggsy thinks. He can’t bring himself to look at him. If he does, he’ll lose his nerve, won’t go through with it. His shoulders hunch in on themselves and he hugs his knees to his chest, stares straight ahead at the wall. The words sound like a death knell, ringing hollow. “We need to end this.”

Episode recap/review 12.19: "The Future"

THEN: Oh, goody. It’s going to be a mytharc episode.

NOW: Sad, dirty Kelly Kline is being force-fed vitamins by Dagon. Dagon reminds her again that she’s going to die when the Lucifetus is born, and I wonder again why she would have showed her hand like that. She had Kelly right where she wanted her; a willing, compliant, trusting incubator. Why did she throw that away? She nags Kelly into taking a bath, in the saddest bathroom ever, complete with broken mirror. Kelly fills the rusty tub with a garden hose, apologizes to her unborn baby, takes a shard of the broken mirror, and slits her wrist.

Title card!

We have a lovely montage of Sam in the bunker, in full-blown research mode, looking through books and writing arcane markings on the map room table and just looking absolutely fantastic. He’s wearing a black button-up shirt with no apparent t-shirt underneath, and he’s extra scruffy. Not “The Born Again Identity” levels of scruffy, but scruffier than we normally see him, and it’s marvelous. I don’t know if it’s supposed to indicate something wrong, some level of obsession or lack of self care, but daaaaaamn. It’s fantastic.

The future looks fucking awesome, my friends.

Dean shows up, equally dark, also a bit scruffy (thank you baby Jesus) and is impressed by Sam’s work. Since he hasn’t seen any of it, either he’s been away, or Sam did all of this overnight. I’m going with B. He calls Sam “Beautiful Mind,” which I believe last happened when Sam was first having halluciferinations, and I know there’s no reason to assume this episode’s writer is actually aware of that. It’s probably a coincidence. But in a season full of callouts to earlier (better) days, it makes me wonder.

Sam’s been figuring out when the Lucifetus will be born, which doesn’t explain the symbols written all over the table, but that’s okay. We will deal. It does explain why we saw him circling the number 18, because he’s predicted the nephilim is due on May 18, which is coincidentally the day of the season finale.

(Sidebar: I’ve complained before about Entertainment Weekly ignoring SPN when they have roundups of the best shows to watch this week, season premieres, season finales, etc. This week’s EW actually did have a blurb about the SPN season finale. And I couldn’t read it because spoilers. File this under “be careful what you wish for.” Or maybe under “seriously, she’s never satisfied.”)

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yuuriwithviktor  asked:

Do you know any of the most mind twisting and thrilling, maybe horrifying, fics? Anything with a lot of clever plot twists or something that will keep me on edge while I read? Nothing that is nsfw? Thank youu

That’s a tall order to fill - the most mind twisting, thrilling and maybe horrifying fics! We rec mostly longfic here and it is very rare to have that kind of intensity in a 50+k fic. Usually, it's the short ones that pack serious punch. You may want to check out asks about Lovecraftian fics and Southern Gothic style fics and our horror tag.

As far as NSFW, several of these are NC-17, but its not like anyone can tell at work ;) Or, check out reviews for ratings and keep in mind that in plotty fics smut scenes are not too long and can be skipped if needed. 

Here’s some fics that surprised us with their clever plot twists and kept us turning pages. All links go to our reviews. 

And here’s a time capsule recs, twisty fics written during season 5.

Fire of Heaven [M, 3,700 word count]

Five years after her run in with Azazel, Mary Winchester makes another deal.

Venn Diagram [M, 3,400 word count]

The Apocalypse has been averted, but Dean and Castiel didn’t get out of it unscathed. They eventually manage to find a happy ending, of sorts.

If our followers know of some mind twisting short fics, let us know after our hiatus and we will add them here after checking them out! 

Things you said when I was asleep

(A/N): I think I’m falling for Tony and I really don’t approve

Warnings: Some angst I guess, mentions of alcohol and drugs


Originally posted by sam-kaulitz

   Tony stared down at the sleeping beauty in his lap. (Y/N)’s face looked so calm and peaceful for a change. Tony hardly ever saw such emotions written on their face, given they were not only an avenger but they were dating Tony Stark too. Either one of those in itself was beyond stressful, but here was (Y/N) balancing both. 

   Why (Y/N) was with Tony Stark, professional Fuck up and douchebag, was beyond him. How they could put up with his snarky ass 24/7 was something he’d never understand but they did it. (Y/N) had completely changed his life, and for the better too. After Pepper Tony was shattered, after losing Cap and Rhodey Tony was but a shell of the man he used to be. 

   Alcohol never satisfied his needs and he took up some heavier, darker things. When Tony was lying passed out, all alone in his tower, (Y/N) was the one to find him and piece him back together. They pulled him together, picked up all the broken pieces of what used to be Tony and began assembling them again. 

   It took awhile for Tony to finally let someone back into his life again, after all, he had lost everyone and everything he ever cared for. But once he had, he had never been more grateful in his entire life. 

   “You make me a better man,” Tony whispers as he gently pushes a piece of hair behind (Y/N)’s ear. “I don’t know where I’d be without you,” Tony stops to admire the way (Y/N)’s face looks so beautiful when they sleep. “Probably dead in some alley or something,” He whispers once again. “I can never repay you for what you’ve done but I can tell you, I will spend every last waking moment of my time making sure that you’re okay.” Tony’s voice cracks a bit as Tears begin to gather in his eyes. “I’m not going to let you end up like Steve and Rhodey, I’m not going to let you go.” A few tears begin to spill over and Tony is quick to wipe them away. “I’m not going to let you down (Y/N),” He whispers as he steadies his voice. ‘I’m not that man anymore,”

   These were the words Tony wished he had the heart to tell you face to face. He wished he could spill his soul to you, tell you how much he loved you, how much you meant to him. But he never had the guts, couldn’t do it before, couldn’t do it now. But he most definitely kept his promise, he didn’t let you end up like Cap and Rhodey, he wasn’t going to let you become another hole in the belt of life. He was having none of that. So for as long as he could, he protected you, he didn’t let you down, he was always there, he made sure that you knew that he loved you even if he could never express that through words. 

Message to all NaLu and Gruvia Fans!

Attention all Gruvia and NaLu fans! We have a Code: Red, This is not a drill! The enemy has stuck first, I repeat, the enemy has stuck first. Natsu had just became E.N.D, after Dimaria tried to kill Lucy, he was also heading straight towards Zeref, but he has ran into Gray. And now, the E.N.D. situation is gonna get worse! So every Gruvia and NaLu fans prepare for battle! We need to find Juvia and let her know what’s going on! Not only that, She’s only one to snap Gray out of his own rage and despair, that will give use the opportunity to reunite Gruvia. We’ll also need help from Lucy save Natsu from his dark side! Then we’ll deal with Zeref and Eileen from harming Mavis! Put an end to this horrific fight between Natsu and Gray and then we’ll get rid of Zeref and Eileen and assemble the rest of the Fairy Tail guild!  No matter what happens we need to save the Gruvia ship and the NaLu ship from this ultimate despair and death! WE NEED TO SAVE BOTH SHIPS RIGHT HERE, RIGHT NOW!!!

anonymous asked:

I'm looking for this girl named Mel from Sweden and I know she's obsessed with Orphan Black so maybe she follows you or other OB blogs and IF EVERYONE COULD PRETTY PLEASE REBLOG THIS THAT'D BE GREAT

OH MY GOD IT’S A CLONE HUNT.

I FEEL LIKE I’M ACTUALLY IN AN EPISODE OF ORPHAN BLACK RIGHT NOW.

I FEEL SO HONOURED TO BE INCLUDED.

OKAY, LET’S DO THIS THING.

[clears throat]

MEL, FROM SWEDEN, ARE YOU OUT THERE?