Two-thirds of all predatory fish have disappeared in the last century
A recent study finds that industrialized fishing is mostly to blame for the shocking population collapse.
New Study Finds That Neurons Actively Fine Tune Themselves at the Genetic Level
Read the full article New Study Finds That Neurons Actively Fine Tune Themselves at the Genetic Level at NeuroscienceNews.com.
A new study provides the first biological evidence that neurons are finely “tuning” their own molecular-level machinery to regulate this flow of ions and thus their electrical charge.
The research is in Current Biology. (full access paywall)
Research: “Activity-Dependent Feedback Regulates Correlated Ion Channel mRNA Levels in Single Identified Motor Neurons” by Simone Temporal, Kawasi M. Lett, and David J. Schulz in Current Biology. doi:10.1016/j.cub.2014.06.067
Image: The researchers tested their hypothesis using a cluster of neurons called the stomatogastric ganglion that is at the center of a network of nerves and muscles that helps process food in the Jonah crab. This image is for illustrative purposes only and shows the stomatogastric ganglion of a Jonah crab. This image is not connected to the research. Credit Wstein.
The discovery of a “maternal age effect” by a team of Penn State scientists that could be used to predict the accumulation of mitochondrial DNA mutations in maternal egg cells — and the transmission of these mutations to children — could provide valuable insights for genetic counseling. These mutations cause more than 200 diseases and contribute to others such as diabetes, cancer, Parkinson’s disease, and Alzheimer’s disease. The study found greater rates of the mitochondrial DNA variants in children born to older mothers, as well as in the mothers themselves. The research will be published in the early online edition of the Proceedings of the National Academy of Sciences on October 13, 2014.
Mitochondria are structures within cells that produce energy and that contain their own DNA. “Many mitochondrial diseases affect more than one system in the human body,” said Kateryna Makova, professor of biology and one of the study’s primary investigators. “They affect organs that require a lot of energy, including the heart, skeletal muscle, and brain. They are devastating diseases and there is no cure, so our findings about their transmission are very important.”
Credit: Kateryna Makova lab, Penn State University
(Photo : Gary Carlson) The inner membrane of each mitochondrion contains distinctive folds known as cristae. In a normal mitochondrion (left) these folds fill the interior, but these folds are lost in damaged or
dysfunctional mitochondria (right). Dozens of rare diseases have been shown to result from this type of mitochondrial dysfunction. Several others — including Alzheimer disease, autism, cancer,
cardiovascular disease, Parkinson disease, and type 2 diabetes — are suspected to involve the mitochondria.
Are you a SLIder?
The phenomenon is known as street lamp interference, or SLI, and it possibly is a psychic event that is just beginning to be recognized and studied. Like most phenomena of this type, the evidence is almost exclusively anecdotal. I have received several stories like the one above from readers.
Typically, a person who has this effect on streetlights - also known as a SLIder - finds that the light switches on or off when he or she walks or drives beneath it. Obviously, this could happen occasionally by chance with a faulty streetlight (you’ve probably noticed that it’s happened to you once in a while), but SLIders claim that it happens to them on a regular basis. It doesn’t happen every time with every streetlight, but it occurs often enough to make these people suspect that something unusual is going on.
Very often, SLIders also report that they tend to have an odd effect on other electronic devices. In letters I’ve received, these people claim such effects as:
- Appliances such as lamps and TVs go on and off without being touched.
- Lightbulbs constantly blow when the SLIder tries to turn them off or on.
- Volume levels change on TVs, radios, and CD players.
- Watches stop working.
- Children’s electronic toys start by themselves when the SLIder is present.
- Credit cards and other magnetically encoded cards are damaged or erased when in their possession.
WHAT’S THE CAUSE?
Any attempt to pinpoint a cause for SLI at this point would be mere speculation without a thorough scientific investigation. The problem with such investigations, as with many forms of psychic phenomena, is that they are very difficult to reproduce in a laboratory. They seem to happen spontaneously without the deliberate intention of the SLIder. In fact, the SLIder, according to some informal tests, are usually unable to create the effect on demand.
A reasonable speculation for the effect, if it is a real one, might have something to do with the electronic impulses of the brain. All of our thoughts and movements are the result of electrical impulses that the brain generates. At present it is known that these measurable impulses only have an effect within an individual’s body, but is it possible that they could have an effect outside the body - a kind of remote control?
Research at the Princeton Engineering Anomalies Research (PEAR) lab suggested that the subconscious can indeed affect electronic devices. Subjects are able to influence the random generations of a computer far more than would occur merely by chance. This research - and research being conducted at other laboratories around the world - are beginning to reveal, in scientific terms, the reality of such psychic phenomena as ESP, telekinesis and soon, perhaps, SLI. (Note: the PEAR lab did not specifically research SLI, and the research facility has since been closed.)
In June of 1972, a woman appeared in Cedar Senai hospital in nothing but a white, blood-covered gown. Now this, in itself, should not be too surprising as people often have accidents nearby and come to the nearest hospital for medical attention, but there were two things that caused people who saw her to vomit and flee in terror.
The first being that she wasn’t exactly human. she resembled something close to a mannequin, but had the dexterity and fluidity of a normal human being. Her face, was as flawless as a mannequins, devoid of eyebrows and smeared in make-up.
There was a kitten clamped in her jaws so unnaturally tight that no teeth could be seen, and the blood was still squirting out over her gown and onto the floor. She then pulled it out of her mouth, tossed it aside and collapsed.
From the moment she stepped through the entrance to when she was taken to a hospital room and cleaned up before being prepped for sedation, she was completely calm, expressionless and motionless. The doctors thought it best to restrain her until the authorities could arrive and she did not protest. They were unable to get any kind of response from her and most staff members felt too uncomfortable to look directly at her for more than a few seconds.
But the second the staff tried to sedate her, she fought back with extreme force. Two members of staff had to hold her down as her body rose up on the bed with that same, blank expression.
She turned her emotionless eyes towards the male doctor and did something unusual. She smiled.
As she did, the female doctor screamed and let go out of shock. In the woman’s mouth were not human teeth, but long, sharp spikes. Too long for her mouth to close fully without causing any damage…
The male doctor stared back at her for a moment before asking “What in the hell are you?”
She cracked her neck down to her shoulder to observe him, still smiling.
There was a long pause, the security had been alerted and could be heard coming down the hallway.
As he heard them approach, she darted forward, sinking her teeth into the front of his throat, ripping out his jugular and letting him fall to the floor, gasping for air as he choked on his own blood.
She stood up and leaned over him, her face coming dangerously close to his as the life faded from his eyes.
She leaned closer and whispered in his ear.
The doctor’s eyes filled with fear as he watched her calmly walk away to greet the security men. His last ever sight would be watching her feast on them one by one.
The female doctor who survived the incident named her “The Expressionless”.
There was never a sighting of her again.
Ebola Up Close
At this point, there’s not much that hasn’t been said or written about the Ebola virus, though if you want a good history and general background, check out the World Health Organization’s fact sheet.
The image above, produced by Heinz Feldmann, Peter Jahrling, Elizabeth Fischer and Anita Mora of the National Institute of Allergy and Infectious Diseases, part of the National Institutes of Health, depicts the stringy virus emerging from an infected cell in search of new cells to infect.
Chromodoris nudibranch by adamhanlon Nudibranchs are sea slugs and, unlike their terrestrial relatives, exist in an amazing array of types and colors. This Geometric Chromodoris (Chromodoris geometries) is moving across its substrate of a piece of fallen timber. In common with many nudibranchs, this Chromodoris feeds on hydroids, coral, sponges and anemones. As it moves, its mantle or skirt “waves” up and down rhythmically.
To most of us, the railroad-hopping wanderer is a figure lost to the American imagination. But photojournalist and TED Fellow Kitra Cahana shows the nomadic lifestyle is still very much alive. Taking to the road is a matter of liberation for some, of desperation for others, and Cahana’s gritty photos capture both the fear and freedom of life on the margins.
Scientists identify A mechanism that facilitates brain repair following A stroke.
Learn more: http://bit.ly/1njLGRL
- Anonymous said:I struggle with understanding a deity's role in the biological conception of a human embryo. All of us were born with pre-determined chromosomes, but why should a system of beliefs limit us from choosing our gender identities?
Hi and thanks for the questions. I see two here so I will deal with each separately below.
1) What is the Deity’s role in the conception of a...