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Apr 23, 2021

SpaceX’s Crew-2 launch lights up the predawn sky with a spectacular show (photos)

Posted by in category: space travel

SpaceX’s Crew-2 mission lit up the sky with a spectacular spaceflight show this morning (April 23) with a successful crewed launch to the International Space Station.


SpaceX lit up the sky with a spectacular rocket show before dawn today (April 23) with a successful Crew-2 astronaut launch to the International Space Station for NASA.

Riding a Falcon 9 rocket, the company’s Crew Dragon spacecraft, named Endeavour, lifted off from NASA’s Kennedy Space Center in Florida as the sun slowly crept above the horizon, making for an especially colorful and striking view.

Apr 23, 2021

“The Unicorn” – Closest Black Hole to Earth Ever Discovered

Posted by in category: cosmology

Scientists have discovered one of the smallest black holes on record – and the closest one to Earth found to date.

Researchers have dubbed it “The Unicorn,” in part because it is, so far, one of a kind, and in part because it was found in the constellation Monoceros – “The Unicorn.” The findings were published on April 21, 2021, in the journal Monthly Notices of the Royal Astronomical Society.

“When we looked at the data, this black hole – the Unicorn – just popped out,” said lead author Tharindu Jayasinghe, a doctoral student in astronomy at The Ohio State University and an Ohio State presidential fellow.

Apr 23, 2021

Sixty-year-old question on DNA replication timing sequence answered

Posted by in categories: biotech/medical, genetics

Over the last 60 years, scientists have been able to observe how and when genetic information was replicated, determining the existence a “replication timing program,” a process that controls when and in what order segments of DNA replicate. However, scientists still cannot explain why such a specific timing sequence exists. In a study published today in Science, Dr. David Gilbert and his team have answered this 60-year-old question.

“Why would care about the order in which they replicate DNA?” asked lead scientist Dr. Gilbert. “After all—all cells need to replicate all their DNA. Our hypothesis has been that it’s not just DNA that replicates, but all of the that read the DNA replicate as well.” Dr. Gilbert further hypothesized that there might be a purpose behind the timing and process because “mother nature would not squander this opportunity to control how the DNA is read.”

“The time at which you replicate provides an ideal time at which to choose whether to maintain all the regulatory factors and continue with the same functional interpretation of the information in DNA or change it to elicit new functions,” explains Dr. Gilbert.

Apr 23, 2021

DARPA Develops Drone to Counteract Smaller Ones, Future War of Drones?

Posted by in categories: drones, military

There’s been a lot of talk lately about drones as a huge military asset. But, since everybody seems to be doing the same thing, the question becomes: how do we counteract them? The U.S. military is also focusing on drones as a threat and what are the best ways to tackle this threat. Aerial Dragnet has the answers.

Apr 23, 2021

Malaria vaccine hailed as potential breakthrough

Posted by in categories: biotech/medical, innovation

Early trials show Oxford developers may have finally found an effective jab against the disease.

Apr 23, 2021

ZAP Surgical Announces Future Installation of Novel Non-Invasive Brain Tumor Treatment System in Munich, Germany

Posted by in categories: biotech/medical, neuroscience

O,.o.


European cyberknife center to be among the first providers in the world to offer the latest advance in gyroscopic radiosurgery.

Apr 23, 2021

Toxic masculinity: Y chromosome contributes to a shorter lifespan in male flies

Posted by in categories: biotech/medical, genetics, life extension, sex

Males may have shorter lifespans than females due to repetitive sections of the Y chromosome that create toxic effects as males get older. These new findings appear in a study by Doris Bachtrog of the University of California, Berkeley published April 22 in PLOS Genetics.

In humans and other species with XY sex chromosomes, females often live longer than . One possible explanation for this disparity may be repetitive sequences within the genome. While both males and females carry these repeat sequences, scientists have suspected that the large number of repeats on the Y chromosome may create a “toxic y effect” that shortens males’ lives. To test this idea, Bachtrog studied male fruit flies from the species Drosophila miranda, which have about twice as much repetitive DNA as and a shorter lifespan. They showed that when the DNA is in its tightly packed form inside the cells of young male flies, the repeat sections are turned off. But as the flies age, the DNA assumes a looser form that can activate the repeat sections, resulting in .

The new study demonstrates that Y chromosomes that are rich in repeats are a genomic liability for males. The findings also support a more general link between repeat DNA and aging, which currently, is poorly understood. Previous studies in have shown that when repeat sections become active, they impair memory, shorten the lifespan and cause DNA damage. This damage likely contributes to aging’s physiological effects, but more research will be needed to uncover the mechanisms underlying repeat DNA’s .

Apr 23, 2021

Anti-aging compound improves muscle glucose metabolism in people

Posted by in categories: biotech/medical, life extension

A natural compound previously demonstrated to counteract aspects of aging and improve metabolic health in mice has clinically relevant effects in people, according to new research at Washington University School of Medicine in St. Louis.

A small clinical trial of postmenopausal women with prediabetes shows that the compound NMN (nicotinamide mononucleotide) improved the ability of insulin to increase in skeletal muscle, which often is abnormal in people with obesity, prediabetes or Type 2 diabetes. NMN also improved expression of genes that are involved in muscle structure and remodeling. However, the treatment did not lower blood glucose or , improve blood lipid profile, increase insulin sensitivity in the liver, reduce fat in the liver or decrease circulating markers of inflammation as seen in mice.

The study, published online April 22 in the journal Science, is the first randomized clinical trial to look at the metabolic effects of NMN administration in people.

Apr 23, 2021

“Ice cube tray” retinal patch is loaded with cells to restore vision

Posted by in categories: biotech/medical, materials

The second-generation of their implantable scaffold takes the shape of an ice cube tray, and can hold three times as many photoreceptor cells — 300000 of them in all — and features cylindrical holes on the underside so these cells can connect with the patient’s retinal tissue as they mature. It is made from a biocompatible material called poly(glycerol-sebacate) that offers the necessary mechanical strength, but is safely metabolized by the body after it serves its purpose.


One of the main causes of vision loss in adults is deteriorative disorders of the retina, like macular degeneration, that are characterized by the death of the eye’s photoreceptor cells. Scientists are therefore focusing a lot of attention on coming up with ways to regenerate these cells, and a team at the University of Wisconsin-Madison (UW-Madison) has engineered a novel type of scaffold that could give these efforts a boost, by improving the precision with which replacement photoreceptor cells can be delivered into the eye.

Way back in 2012, we looked at research in which UW-Madison scientists demonstrated how pluripotent stem cells could be used to grow retinal tissue in the lab. This tissue featured many of the hallmarks of real retinal tissue, including photoreceptor cells, and raised the prospect of harnessing this technique to grow replacement tissue in place within a damaged or diseased eye to restore vision.

Continue reading “‘Ice cube tray’ retinal patch is loaded with cells to restore vision” »

Apr 23, 2021

Scientists cast new understanding of how skin repairs itself

Posted by in categories: biotech/medical, life extension

Our ultimate goal is to improve regeneration of functional skin—and maybe other organs with the a similar endogenous mechanism.


University of Manchester scientists have cast new light on how our skin repairs itself, bringing the possibility of regeneration of the organ a step closer.

The study team, funded by the Medical Research Council and Helmut Horten Foundation, showed the activation of specific parts of the DNA leading to better division of human skin cells. The study is published in Nucleic Acid Research.

Continue reading “Scientists cast new understanding of how skin repairs itself” »