605 private links
Lake Retba in Senegal is the world's second most saline body of water, thanks to being cutoff from the ocean some 50 years ago.
Workers produce 60000 tons of salt per year by harvesting it from the lake bottom and sun-drying it before adding iodine and filling it into bags for sale.
"How 60,000 Metric Tons of Salt Are Harvested from One of the World’s Saltiest Lakes", by Eater
For comparison, the world annual salt production (not only from lakes or oceans), is around 280 million tons. The oceans contain a virtually inexhaustible supply of salt.
Good to see Nature making this point, although this argument is hardly new.
If you like your arguments in long-form, why not read In the Beginning was the Command Line by Neal Stephenson from 1999 (yes, it's old, but well worth a read).
Interestingly, the command line being great does not make the alternative fairly OK. It's much worse than that (that is an article by Ben Klemens from about a decade ago, original URL has unfortunately succumbed to linkrot, but I had it saved on my Wallabag).
Now easy to migrate your data from the following services to your Nextcloud account.
Note: in all cases, the administrator has to install the corresponding app first!
- OneDrive. To be able to migrate data, the Nextcloud instance administrator also has to setup OAuth credentials with OneDrive for their server.
- Dropbox. Connecting it to your account should just work.
- Google. To be able to migrate data, the Nextcloud instance administrator also has to setup OAuth credentials with Google for their server.
Also see Nextcloud's press release, and Forbes article.
Derek Muller (Veritasium) with an excellent explainer on how potash is produced.
Immersive and impressive.
Go ahead and read Jason Kottke's description, then watch ORBIT by Seán Doran.
The Molecular Shape of You by A Capella Science is not just amazing, it's genius! A must watch for any student of science. If you haven't seen it before, enjoy!
Other great videos by Tim Blais: The surface of light!, Evo-Devo and the very timely Vaccine Wellerman Seashanty.
Thanks to u/GuitHarper for the tip.
- https://www.overleaf.com/gallery/tagged/cv
- https://ctan.org/pkg/moderncv (examples: classic, fancy, oldstyle)
- https://github.com/posquit0/Awesome-CV (example)
- https://ctan.org/pkg/curve
- https://ctan.org/pkg/limecv (example)
- https://ctan.org/pkg/europasscv (example)
- https://ctan.org/pkg/europecv (example)
The Google Arts & Culture organisation has teamed up to create the digital platform Preserving Egypt’s Layered History with archaeologists at the American Research Centre in Cairo.
[The] new online platform aims to turn traditionally scholarly subject into something "easily digestible and fun to explore".
More videos at the original post, but I would like to highlight these videos:
- How do vaccines work? Kelwalin Dhanasarnsombut, Ted-Ed (2015) Good general introduction.
- How fast can a vaccine be made? Dan Kwartler, Ted-Ed (Jun 2020)
- mRNA vaccines A slightly technical but nonetheless approachable explainer of how mRNA vaccines work (the basis of both Pfizer-BioNTech's and Moderna's COVID-19 vaccine).
And not to forget, Wikipedia has an excellent article on the current state of our COVID-19 vaccines.
Screen capture is useful to create short instruction videos and the like. GIF is the most common output format. But GIF is an awful format. Consider first creating a normal video first, then using something like gifski to encode to GIF without losing too much quality.
- Peek, animated GIF recorder. Linux, FOSS (repo).
- Gifine, record from a directory of frames, or select a region of your desktop. Linux, FOSS (repo).
- SilentCast, silent mkv screencast and animated GIFs. Linux, FOSS (repo).
- Byzanz, part of GNOME. Linux, FOSS.
- ScreenToGif, screen, webcam and sketchboard recorder. Windows only, FOSS (repo, ghacks article)
- Cropper, screen capture utility. Windows only, FOSS.
- GifCam. Windows only. ghacks article.
- GiftedMotion (Java JAR, very old software, ghacks article)
- LICEcap. Windows, OSX and WINE. Github repo.
- On Mac OS X, there's a built-in QuickTime screen recorder.
- OS X screencast to animated GIF using only free tools, instructions here.
- GIF Brewery. MacOS, Mac App Store.
- Kazam, project seems a bit outdated. Recently suggested by Darren Goossens.
Similar lists by others
We estimate COVID risk in units of microCOVIDs, where 1 microCOVID = a one-in-a-million chance of getting COVID.
Compare with the concept of micromort.
Via FlowingData
"Econometrics and Free Software" by Bruno Rodrigues.
Dr. Iman Abuzeid is the co-founder and CEO of Incredible Health, a digital platform that helps streamline the hiring process for nurses and recruiting hospitals. After seeing an increased demand for nurses in April, and a shift to hiring digitally, the platform has now been able to expedite the hiring process to 15 days or less, compared to an industry standard of 90 days.
A very visual demonstration of how cheap lighting is today (well, since electricity), and how expensive it used to be.
| Year/period | Hours of labour to earn the equivalent cost of 1h of lighting |
|---|---|
| 2020 | 0.0006 |
| 1800s | 5.53 |
| 2000 BC | 57.52 |
Related: consider the impact of nanostructures on improvements to modern LEDs.
- Space-group symmetry
- Magnetic Symmetry and Applications
- Group-Subgroup Relations of Space Groups
- Representations and Applications
- Solid State Theory Applications
- Structure Utilities
- Topological Quantum Chemistry
- Subperiodic Groups: Layer, Rod and Frieze Groups
- Structure Databases
- Raman and Hyper-Raman scattering
- Point-group symmetry
- Plane-group symmetry
- Double point and space groups
How to cite the BCS. Related papers are tagged "Bilbao Crystallographic Server" in Zotero.
Free and open source software for video recording and live streaming. Windows, Mac or Linux.
I heard about it just recently, and in short order stumbled on a number of interesting ideas:
- The OBS Screen Timer Zoom Trick, CogDog
- OBS Livestreaming vs Zoom for Dynamic A/Synchronous Teaching, anth101
- Hosting Studio20 using OBS with Zoom, EdTechFactotum
- Recorded livestream on how to set the foundation for your OBS Studio setup, stream starts at 3:18, starts talking about OBS studio at 6:25. Eric Nantz shares best practices and tips for showcasing R analyses. Via R Weekly 2021-W28.
Podcast (Hanselminutes) with OBS project lead Hugh Bailey (July 2020)
Plugins
This directory provides an index of 1506 books published across 79 Pressbooks networks. Search and filter books by keyword, subject matter, license, and more.
Via Edtech Factotum
To me, buying an app is serving me a fish dinner; giving me a script I can modify is a lesson in fishing. I’d rather fish. You?
That's a nice analogy by CogDog. I'll have to remember it.
Sorry about the mangled toot earlier!
I just figured out how to send any note I make in my Shaarli instance to my Mastodon and Twitter feeds. Awesome! Now I can keep my content on my own site, but still share it with silos like Twitter.
https://shaarli.chepec.se/shaare/YSJ_Cg