I found this advertisement placard in a vinyl album, and decided to play the card.

https://en.wikipedia.org/wiki/Daniel_Hale_Williams

Edit pictures of the card https://pixelfed.ca/p/bane_killgrind/821853386900164062

cross-posted from: https://lemmit.online/post/5748983

This is an automated archive made by the Lemmit Bot.

The original was posted on /r/todayilearned by /u/Remiliera on 2025-04-26 11:15:07+00:00.

Scientists estimate that up to 70% of the sand on white sandy beaches in the Caribbean and Hawai‘i has been excreted by parrotfish. A large adult parrotfish can excrete over a ton of sand per year. Areas that have parrotfish produce more sand than similar areas with few or no parrotfish. This sediment production rate is especially important in areas like Hawai‘i, where there is little terrestrial input, and almost all of the sand is of biogenic origin.

https://manoa.hawaii.edu/exploringourfluidearth/physical/coastal-interactions/beaches-and-sand/weird-science-parrotfish-and-sand

The fourth floor is labeled 3A. The 14th floor is labeled 13A, etc. Four is considered bad luck.

The theorem has been expressed colloquially as "you can't comb a hairy ball flat without creating a cowlick" or "you can't comb the hair on a coconut".

The sport, practised in Italy, used a wheel of maiorchino cheese and a course with a target at the end.

If I close one eye for a few minutes and then switch which eye is closed I see a very (very) subtle difference in hue.

Left eye sees a green tint; right eye sees a pink tint. It's more obvious when I'm looking at a white wall on a bright day.

I don't get this effect if I don't let one of my eyes adapt to the dark first.

Psychologist B. F. Skinner create a "baby in a box" crib that was designed to make the mother's role easier. It would probably have prevented a lot of SIDS death, but because of its association with Skinner, it never caught on.

Construction began in 2022. It plans to launch satellites.

Drop the pasta, start the playlist, when the music is over, you’ve got perfectly cooked pasta

Between 1915 and 1926, Encephalitis Lethargica, or sleeping sickness, swept the world. It left people frozen—awake but unable to move or speak. Half a million died or became trapped in their bodies. Then, just as suddenly as it appeared, it vanished without explanation.

I mashed my keyboard and that Wikipedia article came up.

More links:

• https://www.asdf-format.org/projects/asdf-standard/en/1.1.1/
• https://github.com/asdf-format/asdf

The video describes it as “dancing,” which I think is overly generous. But the little guy / gal is clearly experiencing happiness and celebrating.