Lifeboat Foundation

Researchers have found electrons that behave as if they have no mass, called Dirac electrons, in a compound used in rewritable discs, such as CDs and DVDs. The discovery of ‘massless’ electrons in this phase-change material could lead to faster electronic devices.

The international team published their results on July 6 in ACS Nano, a journal of the American Chemical Society.

The compound, GeSb₂Te₄, is a phase-change material, meaning its atomic structure shifts from amorphous to crystalline under heat. Each structure has individual properties and is reversible, making the compound an ideal material to use in electronic devices where information can be written and rewritten several times.

The answer is in their genes—especially those that encode for basic life functions, such as metabolism. Thanks to the lowly C. elegans worm, we’ve uncovered genes and molecular pathways, such as insulin-like growth factor 1 (IGF-1) signaling that extends healthy longevity in yeast, flies, and mice (and maybe us). Too nerdy? Those pathways also inspired massive scientific and popular interest in metformin, hormones, intermittent fasting, and even the ketogenic diet. To restate: worms have inspired the search for our own fountain of youth.

Still, that’s just one success story. How relevant, exactly, are those genes for humans? We’re rather a freak of nature. Our aging process extends for years, during which we experience a slew of age-related disorders. Diabetes. Heart disease. Dementia. Surprisingly, many of these don’t ever occur in worms and other animals. Something is obviously amiss.

In this month’s Nature Metabolism, a global team of scientists argued that it’s high time we turn from worm to human. The key to human longevity, they say, lies in the genes of centenarians. These individuals not only live over 100 years, they also rarely suffer from common age-related diseases. That is, they’re healthy up to their last minute. If evolution was a scientist, then centenarians, and the rest of us, are two experimental groups in action.

Musk has scored bragging rights in the battle of billionaires in space after his SpaceX rockets beat competition from Bezos’s Blue Origin to launch National Security payloads for the U.S. Air Force.

International team develops a new method to determine the origin of stardust in meteorites.

Analysis of meteorite content has been crucial in advancing our knowledge of the origin and evolution of our solar system. Some meteorites also contain grains of stardust. These grains predate the formation of our solar system and are now providing important insights into how the elements in the universe formed.

Working in collaboration with an international team, nuclear physicists at the U.S. Department of Energy’s (DOE’s) Argonne National Laboratory have made a key discovery related to the analysis of “presolar grains” found in some meteorites. This discovery has shed light on the nature of stellar explosions and the origin of chemical elements. It has also provided a new method for astronomical research.

Microsoft is redesigning the clipboard in Windows 10 to include images, GIFs, emojis and more.

Ensuring nobody goes to bed hungry.

Almost 690 million people in the world were undernourished in 2019 – that’s 8.9% of the world population, a new UN report says. This figure could exceed 840 million by 2030 if current trends continue.

Continue reading “Global hunger fell for decades, but it’s rising again” »

AI air-fights, Xbox Series S and more!

Brain death can be a tricky concept. Clarity from an international group of doctors may help identify when the brain has stopped working for good.

Physicists have long sought to understand the irreversibility of the surrounding world and have credited its emergence to the time-symmetric, fundamental laws of physics. According to quantum mechanics, the final irreversibility of conceptual time reversal requires extremely intricate and implausible scenarios that are unlikely to spontaneously occur in nature. Physicists had previously shown that while time-reversibility is exponentially improbable in a natural environment—it is possible to design an algorithm to artificially reverse a time arrow to a known or given state within an IBM quantum computer. However, this version of the reversed arrow-of-time only embraced a known quantum state and is therefore compared to the quantum version of pressing rewind on a video to “reverse the flow of time.”

In a new report now published in Communications Physics, Physicists A.V. Lebedev and V.M. Vinokur and colleagues in materials, physics and advanced engineering in the U.S. and Russia, built on their previous work to develop a technical method to reverse the temporal evolution of an arbitrary unknown quantum state. The technical work will open new routes for general universal algorithms to send the temporal evolution of an arbitrary system backward in time. This work only outlined the mathematical process of time reversal without experimental implementations.