Menu

Blog

Page 7357

Oct 19, 2019

Mice with hyper-long telomeres show less metabolic aging and longer lifespans

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

Short telomeres trigger age-related pathologies and shorter lifespans in mice and humans. In the past, we generated mouse embryonic (ES) cells with longer telomeres than normal (hyper-long telomeres) in the absence of genetic manipulations, which contributed to all mouse tissues. To address whether hyper-long telomeres have deleterious effects, we generated mice in which 100% of their cells are derived from hyper-long telomere ES cells. We observe that these mice have longer telomeres and less DNA damage with aging. Hyper-long telomere mice are lean and show low cholesterol and LDL levels, as well as improved glucose and insulin tolerance. Hyper-long telomere mice also have less incidence of cancer and an increased longevity. These findings demonstrate that longer telomeres than normal in a given species are not deleterious but instead, show beneficial effects.

Oct 19, 2019

Surprise Black Hole Discovery Could Explain How They Grew So Enormous in The Early Universe

Posted by in categories: cosmology, materials

In recent years, cosmologists peering back to the very dawn of our Universe have discovered something peculiar. A whole bunch of supermassive black holes — in a time thought way too early for such massive objects to have formed.

Exactly how they got to be so freaking huge so quickly is a heck of a puzzle — but a new surprise discovery might have delivered an answer. The disc of dust and gas around a supermassive black hole is moving in such a way that it’s slurping down material faster than it would normally.

That means it’s gaining mass faster than expected — which in turn could explain what happened in the earliest days of our Universe.

Oct 19, 2019

Chains of atoms move at lightning speed inside metals

Posted by in categories: particle physics, space

A phenomenon that has previously been seen when researchers simulate the properties of planet cores at extreme pressures has now also been observed in pure titanium at atmospheric pressure. Chains of atoms dash around at lightning speeds inside the solid material.

“The phenomenon we have discovered changes the way we think about mass transport in metals. It explains properties of metals that we have, until now, not been able to understand. It’s too early to say what this means in practical terms, but the more we know about how materials function in different conditions, the better possibilities we have to develop materials with new or improved properties,” says Davide Sangiovanni, researcher in the Division of Theoretical Physics at LIU and principal author of an article that has been published in Physical Review Letters.

Oct 19, 2019

Blanket of light may give better quantum computers

Posted by in categories: computing, quantum physics

Quantum mechanics is one of the most successful theories of natural science, and although its predictions are often counterintuitive, not a single experiment has been conducted to date of which the theory has not been able to give an adequate description.

Along with colleagues at bigQ (Center for Macroscopic Quantum States—a Danish National Research Foundation Center of Excellence), center leader Prof. Ulrik Lund Andersen is working on understanding and utilizing .

“The prevailing view among researchers is that is a universally valid theory and therefore also applicable in the macroscopic day-to-day world we normally live in. This also means that it should be possible to observe quantum phenomena on a large scale, and this is precisely what we strive to do in the Danish National Research Foundation Center of Excellence bigQ,” says Lund Andersen.

Oct 19, 2019

The ‘unbelievable journey’ of CRISPR, now on Netflix

Posted by in categories: bioengineering, biotech/medical, ethics, genetics

Mankind’s ability to edit the fabric of human life has led to scientific upheaval, global debate, and at least one international incident. Now, it’s coming to Netflix.

Unnatural Selection,” a four-part docuseries debuting Friday, dissects the stories, science, and ethics behind genome editing, following academics, biohackers, and patients as they move through a brave new world made possible by technologies like CRISPR.

We recently spoke with co-directors Joe Egender and Leeor Kaufman about how the series came to be and how it frames the sprawling story of human genetic engineering. This transcript has been lightly edited for clarity.

Oct 19, 2019

Tesla Model Y: beautiful new bright red prototype spotted at Gigafactory 1

Posted by in categories: sustainability, transportation

Tesla is rolling out more Model Y prototypes for testing and we are getting to see the new electric crossover in new colors, including now a beautiful new bright red prototype spotted at Gigafactory 1.

Earlier this month, a Model Y prototype was spotted being tested around Tesla’s headquarters in Palo Alto and since then, there has been a more steady stream of Model Y sightings.

Continue reading “Tesla Model Y: beautiful new bright red prototype spotted at Gigafactory 1” »

Oct 19, 2019

Qantas tests passenger limits — and pilot brain patterns — on world’s longest nonstop flight

Posted by in category: neuroscience

Qantas will test how pilots and passengers withstand a 20-hour nonstop from New York to Sydney, monitoring brain activity and melatonin levels during the flight.

Oct 19, 2019

Google completes first drone delivery in the US

Posted by in category: drones

The drones are loaded with packages at a “Nest”, where Wing employees pack them with up to 3 pounds of goods.

Oct 19, 2019

Are Electrons Conscious?

Posted by in categories: neuroscience, particle physics

In response to the utter inadequacy of materialism to account for the mind, several philosophers have suggested panpsychism as a solution to the mind–body problem. Perhaps, they argue, all matter is inherently conscious but more primitive aggregates of matter may only have primitive consciousness. From that perspective, humans are very conscious and electrons are maybe just a little bit conscious.

Philosopher Philip Goff:

The panpsychist offers an alternative research programme: Rather than trying to account for consciousness in terms of utterly non-conscious elements, try to explain the complex consciousness of humans and other animals in terms of simpler forms of consciousness which are postulated to exist in simpler forms of matter, such as atoms or their sub-atomic components. This research project is still in its infancy. But a number of leading neuroscientists, such as Christof Koch and Giulio Tononi, are now finding that working within a panpsychist framework bears fruit. The more fruit is borne by this alternative research programme, the more reason we have to accept panpsychism.

Oct 19, 2019

Can scientists reverse time with a quantum computer?

Posted by in categories: computing, law, quantum physics

The universe is getting messy. Like a glass shattering to pieces or a single wave crashing onto the shore, the universe’s messiness can only move in one direction – toward more chaos and disorder. But scientists think that, at least for a single electron or the simplest quantum computer, they may be able to turn back time, and restore order to chaos. This doesn’t mean we’ll be visiting with dinosaurs or Napoleon any time soon, but for physicists, the idea that time can run backward at all is still a pretty big deal.

Normally, the universe’s trend toward disorder is a fundamental law: the second law of thermodynamics. It says more formally that any system can only move from more to less ordered, and that the chaos or disorder of a system – its entropy – can never decrease. But an international team of scientists led by researchers at the Moscow Institute of Physics and Technology think they may have discovered a loophole.