1. reblogged: kqedscience

    kqedscience:

In weird Brazilian cave insects, male-female sex organs reversed"This may be the role reversal to end all role reversals.Scientists on Thursday described four insect species that dwell in extremely dry caves in Brazil, feed on bat guano and possess what the researchers called an “evolutionary novelty.” .The females have an elaborate, penis-like organ while the males have a vagina-like opening into which females insert their organ during mating sessions that last 40 to 70 hours, the scientists reported in the journal Current Biology.”
Learn more from reuters.

    kqedscience:

    In weird Brazilian cave insects, male-female sex organs reversed

    "This may be the role reversal to end all role reversals.

    Scientists on Thursday described four insect species that dwell in extremely dry caves in Brazil, feed on bat guano and possess what the researchers called an “evolutionary novelty.” .

    The females have an elaborate, penis-like organ while the males have a vagina-like opening into which females insert their organ during mating sessions that last 40 to 70 hours, the scientists reported in the journal Current Biology.”

    Learn more from reuters.

     
  2. Apr 17th, 2014     sciencebiologycave insectsinsectsgender
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  3. staceythinx:

    Selections from Slate’s fantastic gallery of Incredible Photos of Tiny Animal Partsa collection of some of best animal entries to the Nikon Small World competition last year.

     
  4. Apr 15th, 2014     sciencebiologyslatephotographygooorgeous
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  5. nanodash:

Oooh, sparky…
This is a Jacob’s Ladder, twisted into a double Helix.
To make a Jacob’s Ladder you put two upward pointy bits of metal together and put a high voltage between them. High enough and the electricity can arc through the air by ionising the air Pikachu style.
This ionised air is hot, and it rises, pulling the arc up with it.
Just remember, unless you’re trained, don’t fuck around with electricity. Just don’t.
Linkitylink

    nanodash:

    Oooh, sparky…

    This is a Jacob’s Ladder, twisted into a double Helix.

    To make a Jacob’s Ladder you put two upward pointy bits of metal together and put a high voltage between them. High enough and the electricity can arc through the air by ionising the air Pikachu style.

    This ionised air is hot, and it rises, pulling the arc up with it.

    Just remember, unless you’re trained, don’t fuck around with electricity. Just don’t.

    Linkitylink

     
  6. Apr 10th, 2014     sciencephysicsjacob's laddervoltageelectricityionization
    Comments
  7. nanodash:

nanodash:

This is a sound wave, as represented by fire. Making it the most metal oscilloscope in history.
To be exact, it’s called a Ruben’s Tube. And it’s playing the start of the chorus to Journey’s Any Way You Want It. It must be closing time in the clubs, that’s the only reason they play Journey.
Sound is just air vibrations, as the air vibrates it creates sections of high density air and low density air. The more air, the higher the flame can be. So it translates the sound wave for us. Also fire is pretty.
See how it briefly lapses into a sine wave? That happens when Steve Perry’s dulcet tones occasionally hit one of the harmonics of the pipe, making a standing wave. Which is cool.
This loses something without the sound, so please, go listen to the video here

In case you missed it

    nanodash:

    nanodash:

    This is a sound wave, as represented by fire. Making it the most metal oscilloscope in history.

    To be exact, it’s called a Ruben’s Tube. And it’s playing the start of the chorus to Journey’s Any Way You Want It. It must be closing time in the clubs, that’s the only reason they play Journey.

    Sound is just air vibrations, as the air vibrates it creates sections of high density air and low density air. The more air, the higher the flame can be. So it translates the sound wave for us. Also fire is pretty.

    See how it briefly lapses into a sine wave? That happens when Steve Perry’s dulcet tones occasionally hit one of the harmonics of the pipe, making a standing wave. Which is cool.

    This loses something without the sound, so please, go listen to the video here

    In case you missed it

     
  8. Apr 8th, 2014     ruben's tubesciencephysicswavesineFIREany way you want it
    Comments
  9. reblogged: anjaliauden

    jtotheizzoe:

    Let This Awesome Science Infect Your Mind

    Ed Yong is one of the finest science writers in the world. His National Geographic blog is chock full of the weird, wild, and WTF-inducing stories that make our living world so darn interesting. So I was overjoyed when I heard he would be speaking at this year’s TED.

    He didn’t disappoint. In his talk above, he unlocks the under-appreciated and often cringe-worthy world of mind-controlling parasites. They get no respect, I tell ya, no respect at all. Yet they are cornerstones of countless ecosystems, determining food availability and managing population sizes like armies of freaky fauna, each deployed in a Trojan Horse of evolution’s design. Every parasite’s life is a story, by definition, an elaborate chain that extends from host to host, and I think they’ve found their minstrel in Ed. I mean that as a compliment, of course.

    Listen to him weave a tapestry of tapeworms, explain what makes flamingos munch on zombie shrimp, show you how a cricket is like a TARDIS, how a wasp turns a cockroach into a cocker spaniel, and how a brain-controlling protozoan reminds him of an Elizabeth Gilbert novel. My favorite part of this? The idea that ideas themselves may be parasites.

    I haven’t loved a TED talk this much in a long time. Or maybe that’s just the parasite talking. 

     
  10. Apr 3rd, 2014     scienceted talkparasitesed yong
    Comments
  11.    2

     

    reblogged: paraphyletic

    paraphyletic:

Science News

… “I thought it was very odd to have only one positive emotion,” says cognitive scientist Aleix Martinez of Ohio State University in Columbus.
So he and colleagues came up with 16 combined ones, such as “happily disgusted” and “happily surprised.” Then the researchers asked volunteers to imagine situations that would provoke these emotions, such as listening to a gross joke, or getting unexpected good news.
When the team compared pictures of the volunteers making different faces and analyzed every eyebrow wrinkle, mouth stretch and tightened chin, “what we found was beyond belief,” Martinez says. For each compound emotion, almost everyone used the same facial muscles, the team reports March 31 in the Proceedings of the National Academy of Sciences…

More at Science News

    paraphyletic:

    Science News

    … “I thought it was very odd to have only one positive emotion,” says cognitive scientist Aleix Martinez of Ohio State University in Columbus.

    So he and colleagues came up with 16 combined ones, such as “happily disgusted” and “happily surprised.” Then the researchers asked volunteers to imagine situations that would provoke these emotions, such as listening to a gross joke, or getting unexpected good news.

    When the team compared pictures of the volunteers making different faces and analyzed every eyebrow wrinkle, mouth stretch and tightened chin, “what we found was beyond belief,” Martinez says. For each compound emotion, almost everyone used the same facial muscles, the team reports March 31 in the Proceedings of the National Academy of Sciences

    More at Science News

     
  12. Apr 1st, 2014     sciencepsychologyfacial recognitionfacial expressionsproceedings of the national academy of sciences
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  13. reblogged: freshphotons

     
  14. Mar 27th, 2014     sciencebiologywater fleadaphnia manga
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  15. plant-a-day:

    Sensitive Plant

    Mimosa pudica

    "Pudica" is the Latin word for "shy" or "bashful," which is an apt description of the sensitive "Touch-Me-Not." Native to South and Central America, this shade-lover often grows as a weed under trees and shrubs. It is popular among collectors as a specimen plant worldwide, because of its unique sensitivity to touch.

    The foliage retracts when touched to prevent consumption by herbivores, and it also exhibits nyctinastic movement, meaning its circadian rhythms affect its leafs to close at night, and re-open during the day. 

    This trait is present in many other members of the legume family as well.

    You can buy seeds for this plant and grow it yourself:

    Canada / USA / UK & Europe / Worldwide

    ——

    - biodiverseed

     
  16. Mar 25th, 2014     sciencebiologymimosa pudicatouch me notplants
    Comments
  17.    2

     

    5 Essential Facts About Gravity Waves from the Big Bang - The Countdown #44

    Have you heard about this week’s huge gravity wave discovery? I explain it all in the latest Countdown.

     
  18. Mar 21st, 2014     sciencephysicsspaceastronomyastrophysicsgravity wavesgravitational wavebig banginflationmultiversemultiple universesthe countdownscientific american
    Comments
  19. reblogged: skunkbear

    skunkbear:

    Introducing: The Chicken From Hell

    Today, scientists unveiled a 500-pound, 10-foot-tall bird-like dinosaur they’re calling “the chicken from hell.” You can hear Chris Joyce’s radio piece about it here. It’s real name is Anzu wyliei:

    Anzu after a bird-like demon in Mesopotamian mythology, and wyliei after a boy named Wylie, the dinosaur-loving grandson of a Carnegie Museums of Pittsburgh trustee.

    An odd pairing for an odd creature.

    It apparently roamed what is now the Dakotas (a region actually called Hell’s Creek) around the time of the T. rex, no doubt striking fear in the hearts of many with it’s terrible “CLUCK!”

    Images

    1) A. wyliei is believed to have feathers along it’s arms, probably used for courtship or threat displays. (Illustration by Mark Klingler, Carnegie Museum of Natural History)

    2) A. wyliei’s crested skull. (Maggie Starbard, NPR)

    3) Tyler Lyson, who has been hunting fossils since childhood, participated in the excavation and description of the new species. Here, he holds an Anzu scapula. (Maggie Starbard, NPR)

    4) The A. wyliei claw. (Maggie Starbard, NPR)

     
  20. Mar 20th, 2014     sciencedinosaurchicken from hellanzu wylieipaleontologynpr
    Comments