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Mar 14, 2021

Can some drugs delay aging? Scientists focus on those that target frailty and age-related disease

Posted by in categories: biotech/medical, life extension

But such drugs could face a daunting challenge, since aging is not considered a disease. This means the Food and Drug Administration is unlikely to approve a drug for its anti-aging effects, or as a new use for a licensed drug. Also, pharmaceutical companies probably wouldn’t be inclined to develop drugs for that purpose only.


Drugs that can postpone or prevent the onset of debilitating diseases could enhance longevity and provide enormous societal benefits, geroscientists say.

Mar 14, 2021

A new study suggests 3 feet, not 6 feet, is sufficient distance for school students, with mask-wearing and other safety measures kept in place

Posted by in categories: biotech/medical, health

Some experts have chimed in that tempering social distancing recommendations could be an important step to getting children back into classrooms. Dr. Ashish Jha, dean of the Brown University School of Public Health, suggested in a tweet that the C.D.C. guidance may be changing, and that is “good. Because 6 ft doesn’t protect teachers. But it does keep kids out of school.”

“Want to open schools safely? Masks. Ventilation. Testing. Vaccinating teachers/staff. That’s the list,” Dr. Jha tweeted.

The new study, published March 10, compared the incidence rates of coronavirus cases among students and staff in Massachusetts school districts that required at least six feet of separation with those that required only three feet of distance, and found no statistically significant differences in infection rates among staff members or students.

Mar 14, 2021

Student Project: 18 Ways NASA Uses Pi

Posted by in category: alien life

Whether it’s sending spacecraft to other planets, driving rovers on Mars, finding out what planets are made of or how deep alien oceans are, pi takes us far at NASA. Find out how pi helps us explore space.

Mar 14, 2021

Using Artificial Intelligence to Generate 3D Holograms in Real-Time on a Smartphone

Posted by in categories: biotech/medical, holograms, mobile phones, robotics/AI, virtual reality

A new method called tensor holography could enable the creation of holograms for virtual reality, 3D printing, medical imaging, and more — and it can run on a smartphone.

Despite years of hype, virtual reality headsets have yet to topple TV or computer screens as the go-to devices for video viewing. One reason: VR can make users feel sick. Nausea and eye strain can result because VR creates an illusion of 3D viewing although the user is in fact staring at a fixed-distance 2D display. The solution for better 3D visualization could lie in a 60-year-old technology remade for the digital world: holograms.

Holograms deliver an exceptional representation of 3D world around us. Plus, they’re beautiful. (Go ahead — check out the holographic dove on your Visa card.) Holograms offer a shifting perspective based on the viewer’s position, and they allow the eye to adjust focal depth to alternately focus on foreground and background.

Mar 14, 2021

New Ebola outbreak likely sparked by a person infected 5 years ago

Posted by in category: biotech/medical

But the most immediate question is what these results mean for Ebola survivors, who face a lot of hardship already. Many have not only lost friends and family to the virus, but also struggle with long-term aftereffects, such as muscle pains and eye problems. In a study published in February, Delaporte found that about half of more than 800 Ebola survivors in Guinea still reported symptoms 2 years after their illness, and one-quarter after 4 years.

On top of this, survivors have faced intense stigmatization. Many conspiracy theories swirled in the aftermath of the epidemic, including the claim that survivors had sold family members to international organizations to save themselves, says Frederic Le Marcis, a social anthropologist at the École Normale Supérieure of Lyon and the French Research Institute for Development, who is working in Guinea. One man, he says, was the only one to survive out of 11 family members and when he came back, no one wanted to work with him. “He was seen as someone untrustworthy.” News that a survivor likely touched off the current outbreak could cause further problems for survivors, Le Marcis says: “Will they be highlighted as a source of danger? Will they be chased out of their own families and communities?”

Alpha Keita, a virologist who led the sequencing work at CERFIG, worries about stigmatization and even violence against survivors have occupied him since he first got the surprising results a week ago. One important message to the public should be that some people infected with Ebola show few symptoms, meaning people may be survivors without knowing it. “So don’t stigmatize Ebola survivors—you don’t know that you are not a survivor yourself,” Keita says.

Mar 14, 2021

CRISPR-based gene therapy dampens pain in mice

Posted by in category: biotech/medical

Targeted approach could lead to an opioid-free way of treating chronic pain.

Mar 14, 2021

Meet Carcopter, the Hydrogen-Powered Formula 1 Race Car That Literally Flies at 153 MPH

Posted by in category: transportation

The designers plan to launch it on the Formula 1 circuits as soon as 2023.

Mar 14, 2021

Team creates new ultralightweight, crush-resistant tensegrity metamaterials

Posted by in categories: computing, space

https://youtube.com/watch?v=Wm0enwmGYe4

Catastrophic collapse of materials and structures is the inevitable consequence of a chain reaction of locally confined damage—from solid ceramics that snap after the development of a small crack to metal space trusses that give way after the warping of a single strut.

In a study published this week in Advanced Materials, engineers at the University of California, Irvine and the Georgia Institute of Technology describe the creation of a new class of mechanical metamaterials that delocalize deformations to prevent failure. They did so by turning to tensegrity, a century-old design principle in which isolated rigid bars are integrated into a flexible mesh of tethers to produce very lightweight, self-tensioning truss structures.

Continue reading “Team creates new ultralightweight, crush-resistant tensegrity metamaterials” »

Mar 14, 2021

Exploring Earth From Space: Strait of Gibraltar

Posted by in category: health

The Strait of Gibraltar is featured in this false-color image captured by the Copernicus Sentinel-2 mission on October 282020. Credit: Contains modified Copernicus Sentinel missions (2020), processed by ESA, CC BY-SA 3.0 IGO

The Strait of Gibraltar connects the Mediterranean Sea with the Atlantic Ocean and separates southernmost Spain from northernmost Africa. The channel is 58 km long and narrows to 13 km in width between Point Marroquí (Spain) and Point Cires (Morocco). Ferries and vessels can be seen traveling across the strait and crossing between the two continents.

Continue reading “Exploring Earth From Space: Strait of Gibraltar” »

Mar 14, 2021

New Floquet maser is very good at detecting low frequency magnetic fields

Posted by in categories: cosmology, particle physics

A new type of maser made from periodically driven xenon atoms can detect low frequency magnetic fields far better than any previous magnetometer, according to scientists in China and Germany. The researchers believe their device is ready for use in a proposed gravitational wave search and might in future be used to find hypothetical dark matter particles.

Masers are the microwave-wavelength equivalent of lasers and their extreme frequency stability allows them to make invaluable contributions to atomic clocks, radio telescopes and several other areas of physics. In a traditional maser – as in a traditional laser – the masing action occurs between two energy levels in an atomic or molecular gain medium confined in a cavity. As electromagnetic radiation bounces back and forth in the cavity, photons whose frequency is resonant with the energy difference between the two levels are repeatedly emitted and absorbed by the atoms. Eventually, a “population inversion” with more atoms in the upper level is achieved, and stimulated emission from these atoms produces a highly monochromatic beam of microwave radiation.