Dr. Krantz and Clyde mounted at the Smithsonian. Still my favourite thing ever.
Before Krantz died, he said to Smithsonian anthropologist David Hunt, “I’ve been a teacher all my life and I think I might as well be a teacher after I’m dead, so why don’t I just give you my body.” When Hunt agreed, Krantz added, “But there’s one catch: You have to keep my dogs with me.”
This is the happiest skeleton I’ve ever seen
And here’s the “before” to the Smithsonian’s “after”…
This will never cease to warm my heart.
my favorite part about working with the birds of prey at the museum I interned at was when the vet would come in and wrap them up in to burritos to weigh them and clip their talons
That eagle looks 1776% done.
If I tried to burrito my conure she would summon the strength of her ancestors and attempt to destroy me with her tiny beak.
Much of the damage done by a bullet results from the tumbling motion and the cavitation in the tissue. This is the bullet track in clay of a .38 caliber round, demonstrating that the wound track is much larger than .38 inches (closer to 3 inches).
Bullets produce tissue damage in three ways (Adams, 1982):
Laceration and crushing - Tissue damage through laceration and crushing occurs along the path or “track” through the body that a projectile, or its fragments, may produce.
Cavitation - A “permanent” cavity is caused by the path (track) of the bullet itself with crushing of tissue, whereas a “temporary” cavity is formed by radial stretching around the bullet track from continued acceleration of the medium (air or tissue) in the wake of the bullet, causing the wound cavity to be stretched outward. For projectiles traveling at low velocity the permanent and temporary cavities are nearly the same, but at high velocity and with bullet yaw the temporary cavity becomes larger (Maiden, 2009).
Shock waves - Shock waves compress the medium and travel ahead of the bullet, as well as to the sides, but these waves last only a few microseconds and do not cause profound destruction at low velocity. At high velocity, generated shock waves can reach up to 200 atmospheres of pressure. (DiMaio and Zumwalt, 1977) However, bone fracture from cavitation is an extremely rare event. (Fackler, 1996) The ballistic pressure wave from distant bullet impact can induce a concussive-like effect in humans, causing acute neurological symptoms. (Courtney and Courtney, 2007)
Illustrator’s work invaluable to scientists and conservationists
By Daniel Dunaief
Stephen Nash’s world is populated by the bushiness of eyebrows, the length of tails, and the exact color of skin or fur. An award-winning illustrator, Nash has spent over 30 years at Stony Brook, where he has honed his craft of creating artistic renderings of gibbons, monkeys, apes, gorillas, and numerous others.
British-born and trained, Nash, who is a visiting research associate in the Department of Anatomical Sciences at Stony Brook, came to Long Island in 1982 at the request of Russell Mittermeier, the president of Conservation International. The combination has become a force in conservation, raising awareness of, and potential threats to, numerous primates, as well as other species, such as tree kangaroos in Papua, New Guinea and baobab trees in Madagascar.
Nash provided illustrations, compiled over the course of his career, for a book published last spring called “Mammals of the World: Primates.” At 10.5 pounds, the hard-cover book, which Mittermeier and others edited, is equal to the weight of about 67 mouse lemurs.
Animals are often not cooperative when it comes to posing for pictures, especially when a scientist would like to take a photo that reflects something unique about its physical appearance.
Illustrators like Nash, whose wife Lucille Betti-Nash shares the same profession and works at Stony Brook, use a combination of photos and videos, descriptions from available literature and discussions with current scientists to create images that most closely resemble animals that sometimes rely on staying away from human, and other mammalian, eyes to survive. (continue reading)
It should also be noted that he also created the Nash Collection of Primates in Art and Illustration. An amazing resource which you all should check out.
Unexpected state of matter found in chickens’ eyes
The arrangement of cones in the birds’ retinas forms a pattern previously seen only in physical systems like liquid helium and simple plasmas.
Martian Meteorite Provides Further Evidence Of Water On Mars:
NASA has discovered further evidence that there was once water on Mars — and the agency didn’t even need to leave Earth to find it. A group of researchers has discovered that a 30-pound Martian meteorite found in the Yamato Glacier in Antarctica features curved micro-tunnels that are consistent with moving water. According to NASA, the discovery is “reviving debate in the scientific community over life on Mars.”
"The planet is revealing the presence of an active water reservoir that may also have a significant carbon component," says Everett Gibson, a scientist at NASA’s Johnson Space Center in Houston. The meteorite itself is 1.3 billion years old, and is believed to have landed in Antarctica 50,000 years ago. It was first discovered in 2000. In addition to the tunnels, the meteorite also features tiny, carbon-rich "spherules" squished in between the various layers of rock, a phenomenon similar to another Martian meteorite that landed in Egypt in 1911.
"THE PLANET IS REVEALING THE PRESENCE OF AN ACTIVE WATER RESERVOIR."
Of course, this is far from the first evidence of water on Mars. Study of the planet itself has shown water possibly seeping out from the ground, while it’s believed that in the past the planet was home to lakes that could have supported life. But while that research was done from afar, thanks to machines like the Curiosity rover, the meteorites allow scientists to study these phenomenon up close, which lets them perform a much wider array of tests.
"We can never eliminate the possibility of contamination in any meteorite," says Lauren White, from NASA’s Jet Propulsion Laboratory. "But these features are nonetheless interesting and show that further studies of these meteorites should continue."
Dennis Aabo was able to feel what was in his hand via sensors connected to nerves in his upper arm
Scientists have created a bionic hand which allows the amputee to feel lifelike sensations from their fingers.
A Danish man received the hand, which was connected to nerves in his upper arm, following surgery in Italy.
Dennis Aabo, who lost his left hand in a firework accident nearly a decade ago, said the hand was “amazing”.
In laboratory tests he was able to tell the shape and stiffness of objects he picked up, even when blindfolded.
The details were published in the journal Science Translational Medicine.
An international team carried out the research project, which included robotics experts from Italy, Switzerland and Germany.
"It is the first time that an amputee has had real-time touch sensation from a prosthetic device" said Prof Silvestro Micera from the Ecole Polytechnique Federale de Lausanne and Scuola Superiore Sant’Anna, Pisa.
The scientific advance here was not the hand itself, but the electronics and software that enabled it to give sensory feedback to the brain.
Micera and his team added sensors to the artificial hand which could detect and measure information about touch. Using computer algorithms, the scientists transformed the electrical signals they emitted into an impulse that sensory nerves could interpret.
During an operation in Rome, four electrodes were implanted onto nerves in the patient’s upper arm. These were connected to the artificial sensors in the fingers of the prosthetic hand, so allowing touch and pressure feedback to be sent direct to the brain.
Mr Aabo, 36, a property developer, spent a month doing laboratory tests, firstly to check the electrodes were functioning, and then with these fully connected to the bionic hand.
He said: “The biggest difference was when I grabbed something I could feel what I was doing without having to look. I could use the hand in the dark.
"It was intuitive to use, and incredible to be able to feel whether objects were soft or hard, square or round."
The bionic hand is still a prototype, and due to safety restrictions imposed on clinical trials, Mr Aabo required a second operation to remove the sensors.
"He is a hero," said Professor Paolo Rossini, neurologist, University Hospital Agostino Gemelli, Rome.
"He gave a month of his life and had two operations to test this device.
"We are all very grateful to him."
Prof Rossini said a lot of pre-training was done involving surgery on pigs, and with human cadavers, to ensure they knew exactly how to attach electrodes to the tiny peripheral nerves in the upper arm.
Another member of the team, Dr Stanisa Raspopovic said: “It was a very exciting moment when after endless hours of testing….Dennis turned to us and said with disbelief, ‘This is magic! I can feel the closing of my missing hand!’”
Those working in the field in the UK were also enthusiastic.
"This is very interesting work, taking research in upper limb prosthetics into the next stage by adding sensory feedback, said Dr Alastair Ritchie, Lecturer in Biomaterials and Bioengineering, University of Nottingham.
"This technology would enable the user to know how firmly they are gripping an object, which is vital for handling fragile objects - imagine picking up an egg without any feeling in your fingers."
The international team is now working on how to miniaturise the technology so that it could be used in the home.
"We must get rid of the external cables and make them fully implantable" said Prof Thomas Stieglitz, University of Frieburg, Germany, whose laboratory created the ultra-thin implantable electrodes.
Recently, scientists in Cleveland, Ohio released a video of a patient using the fingers of a prosthetic hand to pull the stalks from cherries while blindfolded. But the research has not yet been published in a peer-reviewed journal.
There is no precise timetable, but scientists think it could be a decade before a sensory feedback bionic hand is commercially available.
And they believe it may pave the way for more realistic prosthetic devices in the future which can detect texture and temperature.
'Bring it on'
But it will undoubtedly be very expensive, well beyond the means of most patients. And artificial hands still lack the precision and dexterity of the real thing.
The super-functioning bionic hand of science fiction films remains the stuff of fiction.
Nonetheless, Dennis Aabo, who now has his old prosthesis back, is ready to swap it for the bionic hand in any future trial.
"If they offer it to me, I will say bring it on, I’m ready."
Not many people know the stereotypical heart shape was meant to be two hearts fused together
Hey there. History nerd here… not many people know this “fact” because it’s not true. The universal heart shape we recognize today has nothing to do with the heart, actually. It has to do with early Roman birth control.
The Romans used a plant called silphium to prevent pregnancy. It was so effective that it became a critical part of Rome’s economy and daily life. It was literally so important to their culture that the image of it’s seed were even imprinted on currency.
It’s the exact shape of the heart we know today, and this is the first time it’s visage was ever recorded in history. It was so important to them, and so highly prized that they actually drove the plant into extinction by over harvesting it for use.
This shape was so ingrained in their society’s conscious as a symbol of sexual liberation that it became associated with all aspects of intimacy, eg. sex, unity, and love.
It’s not two hearts sewn together. It’s an ancient plant that Romans used to have gratuitous amounts of sex before condoms were around.
Just a reminder that a cell is not a bag of water, but rather a crowded metropolis of macromolecules. The reality of cell biology, while more complicated than what your textbook shows you, is much cooler than a simple cartoon.
When you look at the inside of a cell as the crowded, semi-organized, collision-riddled mess that it really is, you’ll look at every bit of biological chemistry in a new way.
(The image of a super-crowded cytoplasm comes from this PLOS paper)
Beware of The Blob! In this talk from TEDxToulouse, biologist Audrey Dussutour uncovers the mystery of myxomycota — a.k.a. le blob — the fascinating blob organism whose unicellular structure betrays a surprising personality.