The Adult Brain Does Grow New Neurons After All

Frisén, who was not involved in the new research, wrote a News and Views about the study in the current issue of Nature Medicine. Just knowing whether adult neurons get replaced is a fascinating basic problem,” he said. The researchers, from Spain, tested a variety of methods of preserving brain tissue from 58 newly deceased people. They found that different methods of preservation led to different conclusions about whether new neurons could develop in the adult and aging brain. Hsieh says her research on epilepsy has found that newborn neurons get miswired, disrupting brain circuits and causing seizures and potential memory loss.

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Apple announces Apple Card credit card

At Apple’s “show time” services event today, it announced a new Apple Card credit card, promising to improve things about the credit card experience with simpler applications, no fees, lowering interest rates, and offering better rewards. To get an Apple Card, users will be able to sign up on their phone in the Apple Wallet app and get a digital card that they can use anywhere Apple Pay is accepted “within minutes.” Customers will also be able to track purchases, check balances, and see when their bill is due right from the app. There will be a physical, titanium card too — but there’s no credit card number, CVV, expiration date, or signature, with all that authorization information stored directly in the Apple Wallet app. Apple is offering a straight 2 percent cash back on purchases made through Apple Pay using an Apple Card, and purchases from Apple will get 3 percent back. As rumored, Apple is partnering with Goldman Sachs for Apple Card, with Mastercard handling payment processing.

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Show HN: Product without a website – Unix friendly backup service: baxx.dev

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Linux touchpad like a Macbook: progress and a call for help

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NPR: New Packet Radio

DescriptionNPR (New Packet Radio) is a custom radio protocol, designed to transport bidirectional IP trafic over 430MHz radio links (ham radio). The radio modem is cheap (~80$) and home-made, with a 433MHz ISM module inside. The modem is connected locally with Ethernet, therefore no specific software is needed on PC. You can add a DMR radio amplifier in order to achieve 20W radio power or more. All the project is open-source : hardware, software, protocol specification.

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A new Einstein cross is discovered

The newly discovered Einstein Cross J2211-3050. It was precisely analyzing Hubble Space Telescope high-resolution images that it was possible to locate an asterism that looked like a new example of Einstein cross. Credit: GTCA new Einstein cross had been discovered, named J2211-0350 according to its coordinates on the sky. Explore further: Most distant gravitational lens helps weigh galaxiesMore information: Daniela Bettoni et al. A New Einstein Cross Gravitational Lens of a Lyman-break Galaxy, The Astrophysical Journal Letters (2019).

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Computational Mathematics with SageMath (2018)

For high school students, Sage provides a wonderful scientific and graphical calculator. It efficiently supports undergraduate students in their computations in analysis, linear algebra, calculus, etc. For graduate students, researchers and engineers, Sage provides the most recent algorithms and tools for many domains of mathematics. This book, written by researchers and teachers at different levels (high school, undergraduate, graduate) focuses on the underlying mathematics, which is necessary to efficiently use Sage. The content of the other parts is more suited for graduate students, teachers and researchers.

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Clarifying the Future of Firefox Screenshots

Screenshots has been a popular part of Firefox since its launch in Firefox 56 in September 2017. The Screenshots feature is not being removed from Firefox. Screenshots users will still be able to crop shots, capture visible parts of pages and even capture full web pages. We’ve decided to simplify the Screenshots service by focusing on these two options and sunsetting the Screenshots server in 2019. We’re also interested in finding new ways to let Firefox users know the feature is there, and are planning experiments to highlight Screenshots as one of many tools that make Firefox unique.

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Golden Rules for Making Money by P. T. Barnum (1880)

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Lesson #1 – Nobody wants to read your shit

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