This week: strange beliefs, a bilingual song, and rocks.

• This is great science communication: how climate change triggered a landslide tsunami in a Greenland fjord, vibrating Earth for 9 days. The video is rough around the edges, made by someone without too much production experience — but it doesn't matter, because the title is great, the story is great, and it's well told, with different authors talking about their specialist subjects. While not every researcher wants to do this, or is comfortable doing this (that's what press offices and channels like mine are for!), how wonderful it is to see a story like this told by the people who discovered it.
   
• Thanks to Isaac for sending over this world-record 49×49 Rubik's cube by Preston's Puzzles. I'd describe this video as "gloriously brief": years of effort are cut down into a few timelapses and quickfire jokes. The one thing that's missing is a bit of explanation of how the cube works, and why the internals are that odd shape... but I suspect that would have more than doubled the length of the video and involved staggering amounts of mathematics. It'll be online somewhere for the curious; I'm happy with just accepting it has to be that way!
   
• madelline's song dopamine, in two languages at once. This is fascinating: a pop song with the French version in the left ear and the English version in the right. If you don't understand French, the way the two songs drift apart and then combine is still worth listening to — and if you do, then the translation choices are thrown into fascinating, sharp contrast. Particularly because the lyrics have a double meaning, too! I wonder what would happen if the two versions of a song like this harmonised with each other? (This video doesn't technically need a content warning, but if you have conservative coworkers or parents, the French version of madelline's outfit would raise a question or two.)
   

• How to delete your 23andme data amid the company's turmoil. It's never a good sign for a company when the tech-blog vultures are circling. Personal data is an asset, and if 23andme is bought out or sold, it's up in the air what will happen to all those DNA results. How times have changed with modern privacy laws, though: if it was ten years ago, you'd probably be entirely out of luck.
   
• What was the song of the summer? Nobody knows.

And finally, here's Wikipedia's list of individual rocks.

All the best,

— Tom