Lifeboat Foundation: Safeguarding Humanity
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Spiders, mushrooms and algae may help build the next Hilfiger, Levi and Chanel.

Organisms are the great designers of our planet, producing materials in distinct patterns to serve a specific function. Bees produce hexagonal honeycombs to store honey, spiders weave symmetrical webs to capture prey, and nautiluses form a logarithmic spiral shell to protect their insides. Synthetic biologists, ever inspired by nature, are leveraging these unique abilities, harnessing nature’s potential to revolutionize apparel by guiding structural assemblies at the molecular level.

Here are three examples of innovative companies — in Tokyo, New York, and Berkeley — that are letting nature show the way to better, more sustainable materials in a quest to alter the fashion and apparel industries forever.

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Lasers have been used to send targeted, quiet messages to someone from several meters away, in a way that no one nearby would be able to hear.

How it works: To send the messages, researchers from MIT relied upon the photoacoustic effect, in which water vapor in the air absorbs light and forms sound waves. The researchers used a laser beam to transmit a sound at 60 decibels (roughly the volume of background music or conversation in a restaurant) to a target person who was standing 2.5 meters away.

A second technique modulated the power of the laser beam to encode a message, which produced a quieter but clearer result. The team used it to beam music, recorded speech, and various tones, all at conversational volume. “This can work even in relatively dry conditions because there is almost always a little water in the air, especially around people,” team leader Charles M. Wynn said in a press release. Details of the research were published in Optics Letters.

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https://paper.li/e-1437691924#/ https://www.nature.com/articles/s41591-019-0375-9

The hippocampus is one of the most affected areas in Alzheimer’s disease (AD). Moreover, this structure hosts one of the most unique phenomena of the adult mammalian brain, namely, the addition of new neurons throughout life. This process, called adult hippocampal neurogenesis (AHN), confers an unparalleled degree of plasticity to the entire hippocampal circuitry3,4. Nonetheless, direct evidence of AHN in humans has remained elusive. Thus, determining whether new neurons are continuously incorporated into the human dentate gyrus (DG) during physiological and pathological aging is a crucial question with outstanding therapeutic potential. By combining human brain samples obtained under tightly controlled conditions and state-of-the-art tissue processing methods, we identified thousands of immature neurons in the DG of neurologically healthy human subjects up to the ninth decade of life. These neurons exhibited variable degrees of maturation along differentiation stages of AHN. In sharp contrast, the number and maturation of these neurons progressively declined as AD advanced. These results demonstrate the persistence of AHN during both physiological and pathological aging in humans and provide evidence for impaired neurogenesis as a potentially relevant mechanism underlying memory deficits in AD that might be amenable to novel therapeutic strategies.

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The Post spoke to tech workers in Zhongguancun and other parts of Beijing for a snapshot of what life is really like living in China’s Silicon Valley, as these tech hubs – home to internet giants like Baidu, Meituan and ByteDance – have been dubbed.

Life in China’s tech industry is not easy, with young employees and entrepreneurs battling burnout while also worrying about career ceilings and lay-offs.

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In an electronic filing with the Federal Communications Commission (FCC), SpaceX has demonstrated a higher than necessary safety for their Starlink constellation satellites in terms of collision risk with other objects in orbit in the scenario that a Starlink satellite becomes uncontrollable after launch.

The filing, in response to FCC questions, reveals SpaceX’s upcoming space-based internet project carries a collision risk 2.1 times less likely than the accepted NASA standard.

The filing occurred on 13 March 2019 in response to a series of FCC follow-up questions from previous approvals and relates to SpaceX’s upcoming deployment of the first batch of Starlink satellites into an initial operational orbit of 550 km.

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Using a modified version of CRISPR, a team of geneticists has successfully triggered 13,200 genetic changes to a single human cell. That’s a new record, by a long shot. This sweeping new editing process could eventually be used to strip DNA of useless or dangerous genetic information—or create entirely new kinds of life.

New research uploaded to the preprint bioRxiv server describes the achievement, in which a Harvard University team led by George Church edited the living crap out of a single human cell to the tune of 13,200 total modifications. Incredibly, the cell survived. The previous record for bulk edits made to a single cell was set in 2017, when Church and his colleagues knocked out 62 copies of a retrovirus found in pig genomes. The new achievement is thus “three orders of magnitude greater” than the previous standard, the authors wrote in their paper.

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