General science thread

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Harvard Medical School scientists have successfully restored vision in mice by turning back the clock on aged eye cells in the retina to recapture youthful gene function.

The team’s work, described today (December 2, 2020) in Nature, represents the first demonstration that it may be possible to safely reprogram complex tissues, such as the nerve cells of the eye, to an earlier age.

In addition to resetting the cells’ aging clock, the researchers successfully reversed vision loss in animals with a condition mimicking human glaucoma, a leading cause of blindness around the world.

The achievement represents the first successful attempt to reverse glaucoma-induced vision loss, rather than merely stem its progression, the team said. If replicated through further studies, the approach could pave the way for therapies to promote tissue repair across various organs and reverse aging and age-related diseases in humans.

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Researchers say if you can climb four flights of stairs (defined as 60 individual stairs) in under a minute, your heart and cardiovascular system are in great shape.

Not sure where you stand when it comes to heart health? A new study just released by the European Society of Cardiology suggests testing yourself on the nearest staircase.


Quote: OnceDear

That looks like an awful lot of lead shot into the air, most of which missed. Lucky there wasn't a city in that direction $:o)'

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A team of scientists at Freie Universität Berlin has developed an artificial intelligence (AI) method for calculating the ground state of the Schrödinger equation in quantum chemistry.

Quote: odiousgambit

Actually , Schrodinger's equation has nothing to do with cats ..

1. Navier–Stokes Existence and Smoothness.
2. Poincaré Conjecture.
3. Birch and Swinnerton-Dyer Conjecture.
4. Hodge Conjecture.
5. P Versus NP Problem.
6. Riemann Hypothesis.
7. Yang-Mills Existence and Mass Gap.

Quote: odiousgambit

Just saw that Oumuamua* has been quite a bit more perplexing than was originally indicated, with some controversy about it. Apparently the object picked up more speed than it should have just from the slingshot effect. Offgassing like a comet does would explain this, but no comet-tail-like trail was detected at all. This has caused all sorts of speculation and one scientist, Avi Loeb,  released a book, "Extraterrestrial: The First Sign of Intelligent Life Beyond Earth" citing the seriousness of the lack of this trail evidence. 


The universe and the solar system have done a consistently good job of pointing out how little we do know. 




but see:

https://photojournal.jpl.nasa.gov/archive/PIA22357_JPL-20180620-ASTRDSf-0007-Interstellar%20Asteroid%20animation-720p.mp4



* a mnemonic for remembering how to spell and say that is to make it  “oh MOO ah MOO ah” which gives pronunciation directly. For spelling it is a matter of remembering the repeated use of 'u' and no use of 'h' [works for me anyway]