$1 hearing aid could treat millions with hearing loss

This $1 hearing aid could treat millions with hearing lossAs an undergraduate in Mumbai, India, Saad Bhamla wanted to do something nice for his maternal grandparents: Buy them a pair of hearing aids. Globally, 230 million people aged 65 and older experience age-related hearing loss. Custom hearing aids amplify sound in the exact frequencies that the listener cannot hear. Lower grade hearing aids are cheaper, but they can’t be customized, and they still cost up to $500. In low- and middle-income countries, only 3% of people with age-related hearing loss wear hearing aids, and in countries like the United States, the adoption rate hovers at about 20%, according to Bhamla.

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Show HN: Headless Recorder

Headless Recorder (previously Puppeteer Recorder)Gold sponsor⭐️ Puppeteer Recorder is now Headless Recorder and supports Playwright! ⭐️Headless recorder is a Chrome extension that records your browser interactions and generates a Puppeteer or Playwright script. Don't forget to check out our sister project theheadless.dev, the open source knowledge base for Puppeteer and Playwright. A recorder / code generator can be helpful, even if the code isn't perfect. Headless Recorder was previously named "Puppeteer Recorder".

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Democratic regression in comparative perspective: scope, methods, and causes

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PostgreSQL 13 Released

PostgreSQL 13 Released! The PostgreSQL Global Development Group today announced the release of PostgreSQL 13, the latest version of the world’s most advanced open source database. "PostgreSQL 13 showcases the collaboration and dedication of our global community in furthering the abilities of the world's most advanced open source relational database," said Peter Eisentraut, a PostgreSQL Core Team member. Continued Performance GainsBuilding on work from the previous PostgreSQL release, PostgreSQL 13 can efficiently handle duplicate data in B-tree indexes, the standard database index. The FETCH FIRST syntax in PostgreSQL 13 is now expanded to include the WITH TIES clause.

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Evil Unit Testing

It is an experimental device that will make my mind that most powerful force on earth! More powerful than this tiny ad! Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop

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Australia to produce seaweed cattle feed that reduces methane emissions by 80%

NewsNew company to reduce cows’ methane using feed additive made from the seaweedAustralia’s national science agency, CSIRO announced the formation of a new company to take a methane-busting seaweed to market, with $13 million secured from five investors. FutureFeed Pty Ltd will commercialise a livestock feed additive made from the seaweed Asparagopsis, which has been shown to reduce methane emissions in beef and dairy cattle by more than 80 per cent in research trials in Australia and the USA. AGP Sustainable Real Assets-Sparklabs Cultiv8 Joint Venture, GrainCorp, Harvest Road, Woolworths and CSIRO have committed to investing in the company. Minister for Industry, Science and Technology Karen Andrews said it was great to see Australian companies getting behind an Aussie innovation with immense global potential. The company expects to see commercial volumes of the feed additive supplied into the Australian beef and dairy market by mid-2021, with international markets to follow.

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New Schema.org support for retailer shipping data

Quick summary: Starting today, we support shippingDetails schema.org markup as an alternative way for retailers to be eligible for shipping details in Google Search results. Since June 2020, retailers have been able to list their products across different Google surfaces for free, including on Google Search. This is why we will often show shipping cost information in certain result types, including on free listings on Google Search (currently in the US, in English only). Retailers have always been able to configure shipping settings in Google Merchant Center in order to display this information in listings. Starting today, we now also support the shippingDetails schema.org markup type for retailers who don't have active Merchant Center accounts with product feeds.

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Mathematics for Programmers [pdf]

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TamaGo – bare metal Go for ARM SoCs

TamaGo - bare metal Go for ARM SoCstamago | https://github.com/f-secure-foundry/tamagoCopyright (c) F-Secure Corporationhttps://foundry.f-secure.comAuthorsAndrea Barisaniandrea.barisani@f-secure.com | andrea@inversepath.comAndrej Rosanoandrej.rosano@f-secure.com | andrej@inversepath.comIntroductionTamaGo is a framework that enables compilation and execution of unencumbered Go applications on bare metal ARM System-on-Chip (SoC) components. The TamaGo framework consists of the following components:A modified Go distribution which extends GOOS support to the tamago target, allowing bare metal execution. Go packages for board support. Executing and debuggingSee the respective board package README file for execution and debugging information for each specific target (real or emulated). See accompanying LICENSE file for full details.

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Byte magazine (1984): Benchmarking Unix

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