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2023-07-12 10:05:00

[American technology tycoon and 17-year-old son exchanged transfusions to maintain youth failed: useless]In order to resist aging, 45-year-old Silicon Valley tycoon Bryan Johnson (Bryan Johnson) once conducted a three-generation transfusion experiment, perfusing his 17-year-old in his body The son’s plasma, and then provide his own plasma to the 70-year-old father. However, the effect is not ideal.

Johnson tweeted last week that he had discontinued the plasma therapy because he had not detected any benefit from it. However, he believes that this type of plasma exchange therapy may be helpful in older people, and the results of his father are not yet in.

Johnson is obsessed with “rejuvenation” and spends $2 million a year on health regimens. He instituted a regimen called Project Blueprint, paid a team of 30 doctors to oversee his condition, lived an extremely strict routine, exercised every day, Strictly adhering to vegetarianism, the daily calorie intake is only 1977 calories, the last meal is eaten at 11 am, and more than 100 supplements are taken every day.

According to Bloomberg, scientists have experimented with sewing young and old mice together so that they share a circulatory system. The results showed that the older mice showed improvements in cognitive function, metabolism and bone structure, while the younger mice showed the possible positive effects of frequent blood donations. However, there is still little experimental data on this technology in humans, and many researchers believe that there are uncertainties in plasma exchange life extension therapy.

Some researchers analyzing the field of longevity warn once morest choosing plasma therapy in healthy people. “We don’t yet have a clear idea that this is a viable treatment for humans,” said Charles Brenner, a biochemist at City of Hope National Medical Center in Los Angeles. “To me, that’s gross, no evidence, and relatively dangerous.”

Editor in charge: Zeng Shaolin

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2023-07-12 10:05:02

Earth has entered the “Anthropocene” Experts say chicken bones are evidence

(Agence France-Presse, Paris, 11th) When aliens or distant descendants of human beings study strata sediments to decipher the earth’s past in 500,000 years, they will find unusual evidence of subverting life and sudden upheaval 500,000 years ago, that is, chickens. bone.

That’s the conclusion scientists have come to following finding evidence that a rapid expansion of human appetite and activity has fundamentally altered natural systems and ushered the planet into a new geological age, the Anthropocene.

There are other obvious clues in the mud and rocks of Earth in the mid-20th century, including a surge of carbon dioxide, methane and other greenhouse gases, as well as radioactive debris from nuclear tests, ubiquitous microplastics, and the spread of invasive species.

But the chicken bone may be one of the most sobering finds of all.

First, they are human inventions.

Geologist Carys Bennett said: “The modern broiler chicken is nothing compared to its ancestors or wild counterparts…the body size, bone shape, bone chemistry and genetics are all different.”

Bennett was the lead author of a 2017 study in the British journal Royal Society Open Science that provided evidence for the chicken as a “signature species” of the Anthropocene.

In other words, the existence of broiler chickens proves that humans have the ability to invade the natural world and interfere with its development.

Jan Zalasiewicz, emeritus professor of paleontology at the University of Leicester in the UK, told AFP: “(Animal) evolution usually takes millions of years, but here it took only a few decades to produce a new species. type of animal.”

The official Anthropocene Working Group (AWG), which he has chaired for more than a decade, today concluded that Crawford Lake near Toronto, Canada, is evidence that Earth was moved into the world by human activity regarding 70 years ago. A new geological chapter “Anthropocene” was opened.

The ubiquity of broiler chickens is another piece of evidence, with chicken bones left in abundance in nearly every inhabited part of the planet.

Bennett, a former researcher at the University of Leicester who is now an official for the People for the Ethical Treatment of Animals (PETA), said: “The chicken is a symbol of the change in our biosphere, which is now dominated by human consumption and resource use.”

“The large number of unique chicken bones discarded around the world will leave a clear signal in the future geological record,” she said.

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2023-07-12 14:49:08

Vienna – The universities of applied sciences (FH) will be given an additional 350 study places for newcomers from autumn. Five locations in Vienna, Lower Austria and Tyrol will benefit from the expansion. Education and Science Minister Martin Polaschek (ÖVP) announced this on Wednesday. The reason for the targeted selection was the Mint focus of the campaign – and the tight capacities in the selected universities.

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